# Algebra Nation MAFS Videos and Standards Alignment Algebra 2

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1 Section 1, Video 1: Linear Equations in One Variable - Part 1 Section 1, Video 2: Linear Equations in One Variable - Part 2 Section 1, Video 3: Linear Equations and Inequalities in Two Variables Section 1, Video 4: Solving Systems - Investigating Graphing, Substitution, and Elimination MAFS.912.A-CED.1.1 Create equations and inequalities in one variable and use them to solve problems. MAFS.912.A-REI.1.1 Explain each step in solving a simple equation as following from the equality of numbers asserted at the previous step, starting from the assumption that the original equation has a solution. MAFS.912.A-CED.1.4 Rearrange formulas to highlight a quantity of interest using the same reasoning as in solving equations. MAFS.912.A-CED.1.1 Create equations and inequalities in one variable and use them to solve problems. MAFS.912.A-CED.1.2 Create equations in two or more variables to represent relationships between quantities; graph equations on coordinate axes with labels and scales. MAFS.912.A-CED.1.3 Represent constraints by equations or inequalities and by systems of equations and/or inequalities, and interpret solutions as viable or nonviable options in a modeling context. MAFS.912.A-REI.3.6 Solve systems of linear equations exactly and approximately (e.g., with graphs), focusing on pairs of linear equations in two variables. MAFS.912.A-REI.4.11 Explain why the x- coordinates of the points where the graphs of the equations y = f(x) and y = g(x) intersect are the solutions of the equation f(x) = g(x); find the This video focuses on creating equations and inequalities in one variable and using them to solve problems. Students will write and solve an equation in one variable that represents a realworld context. Students will complete an algebraic proof to explain steps for solving a simple equation. Students will construct a viable argument to justify a solution method. Students will solve multi-variable formulas or literal equations for a specific variable. Create equations and inequalities in one variable and using them to solve problems. Students will write and solve an equation with one variable that represents a real-world context. Students will identify the quantities in a real-world situation that should be represented by distinct variables. Students will write constraints for a realworld context using equations, inequalities Students will solve systems of linear equations. Students will find a solution or an approximate solution for f(x) = g(x) using a graph. Students will demonstrate why the intersection of two functions is a solution to f(x) = g(x). 1

2 Section 1, Video 5: Solving Systems - Tables and Successive Approximations Section 1, Video 6: Solving Linear Systems Using Substitution Section 1, Video 7: Solving Linear Systems Using Elimination solutions approximately (e.g., using technology to graph the functions, make tables of values, or find successive approximations). MAFS.912.A-REI.4.12 Explain why the x- coordinates of the points where the graphs of the equations y = f(x) and y = g(x) intersect are the solutions of the equation f(x) = g(x); find the solutions approximately (e.g., using technology to graph the functions, make tables of values, or find successive approximations). MAFS.912.A-CED.1.2 Create equations in two or more variables to represent relationships between quantities; graph equations on coordinate axes with labels and scales. MAFS.912.A-REI.3.6 Solve systems of linear equations exactly and approximately (e.g., with graphs), focusing on pairs of linear equations in two variables. MAFS.912.A-CED.1.3 Represent constraints by equations or inequalities and by systems of equations and/or inequalities, and interpret solutions as viable or nonviable options in a modeling context. MAFS.912.A-REI.3.6 Solve systems of linear equations exactly and approximately (e.g., with graphs), focusing on pairs of linear equations in two variables. MAFS.912.A-CED.1.2 Create equations in two or more variables to represent relationships between quantities; graph equations on coordinate axes with labels and scales. Students will find a solution or an approximate solution for f(x) = g(x) using a table of values. Students will find a solution or an approximate solution for f(x) = g(x) using successive approximations that gives the solution to a given place value. Students will identify the quantities in a real-world situation that should be represented by distinct variables. Students will write a system of equations given a real-world situation. Students will write a system of equations for a modeling context that is best represented by a system of equations. Students will solve systems of linear equations. Students will write constraints for a real-world context using equations, inequalities, a system of equations, or a system of inequalities. Students will interpret the solution of a real-world context as viable or not viable. Students will solve systems of linear equations. Students will identify the quantities in a real-world situation that should be represented by distinct variables. Students will write a system of equations given a real-world situation. Students will write a system of equations for a modeling context that is best represented by a system of equations. 2

3 Section 1, Video 8: Systems of Linear Equations in Three Variables - Part 1 Section 1, Video 9: Systems of Linear Equations in Three Variables - Part 2 Section 1, Video 10: Systems of Linear Inequalities Section 2, Video 1: Introduction to Piecewise-Defined Functions - Part 1 Section 2, Video 2: Introduction to Piecewise-Defined Functions - Part 2 Section 2, Video 3: Graphing and Writing Piecewise-Defined - Part 1 MAFS.912.A-REI.3.6 Solve systems of linear equations exactly and approximately (e.g., with graphs), focusing on pairs of linear equations in two variables. MAFS.912.A-CED.1.2 Create equations in two or more variables to represent relationships between quantities; graph equations on coordinate axes with labels and scales. MAFS.912.A-CED.1.3 Represent constraints by equations or inequalities and by systems of equations and/or inequalities, and interpret solutions as viable or nonviable options in a modeling context. For example, represent inequalities describing nutritional and cost constraints on combinations of different foods. MAFS.912.A.F-IF.2.4 For a function that models a relationship between two quantities, interpret key features of graphs and tables in terms of the quantities and sketch graphs showing key features given a verbal description of the relationship. MAFS.912.A.F-IF.2.4 For a function that models a relationship between two quantities, interpret key features of graphs and tables in terms of the quantities and sketch graphs showing key features given a verbal description of the relationship. MAFS.912.A.F-IF.2.4 For a function that models a relationship between two quantities, interpret key features of graphs and tables in terms of the quantities and sketch graphs showing key features given a verbal description of the relationship. Students will solve systems of linear equations. Students will identify the quantities in a real-world situation that should be represented by distinct variables. Students will write a system of equations given a real-world situation. Students will write a system of equations for a modeling context that is best represented by a system of equations. Students will write constraints for a real-world context using equations, inequalities, a system of equations, or a system of inequalities. MAFS.912.F-IF.3.7b Graph functions expressed symbolically and show key features of the graph 3

4 Section 2, Video 4: Graphing and Writing Piecewise-Defined - Part 2 Section 2, Video 5: Real World Examples of Piecewise-Defined Functions Section 2, Video 6: Absolute Value Functions Section 2, Video 7: Transformations of Absolute Value Functions Section 3, Video 1: Real-World Examples of Quadratic Functions by hand in simple cases and using technology for more complicated cases. MAFS.912.A.F-IF.2.4 For a function that models a relationship between two quantities, interpret key features of graphs and tables in terms of the quantities and sketch graphs showing key features given a verbal description of the relationship. MAFS.912.F-IF.3.7b Graph functions expressed symbolically and show key features of the graph by hand in simple cases and using technology for more complicated cases. MAFS.912.A-CED.1.1 Create equations and inequalities in one variable and use them to solve problems. MAFS.912.F-IF.3.7b Graph functions expressed symbolically and show key features of the graph by hand in simple cases and using technology for more complicated cases. MAFS.912.F-BF.2.3 Identify the effect on the graph of replacing f(x) by f(x) + k, kf(x), f(kx), and f(x + k) for specific values of k (both positive and negative); find the value of k given the graphs. Experiment with cases and illustrate an explanation of the effects on the graph using technology. MAFS.912.F-IF.2.4 For a function that models a relationship between two quantities, interpret key features of graphs and tables in terms of the quantities and sketch graphs showing key features given a verbal description of the relationship. MAFS.912.A-CED.1.1 Create equations and inequalities in one variable and use them to solve problems. Include equations arising from linear. Students will determine the value of k when given a graph of the function and its transformation. Students will identify a graph of a function given a graph or a table of a transformation and the type of transformation that is represented. Students will graph by applying a given transformation to a function. Students will determine and relate the key features of a function within a real-world context by examining the function s graph. Students will write an equation in one variable that represents a real-world context. 4

10 Section 4, Video 7: Writing Quadratic Equations When Given a Focus and Directrix Section 4, Video 8: Systems of Equations with Quadratics - Part 1 Section 4, Video 9: Systems of Equations with Quadratics - Part 2 MAFS.912.G-GPE.1.2 Derive the equation of a parabola given a focus and directrix. MAFS.912.A-REI.3.7 Solve a simple system consisting of a linear equation and a quadratic equation in two variables algebraically and graphically. For example, find the points of intersection between the line y = 3x and the circle x 2 + y 2 = 3. MAFS.912.A-REI.4.11 Explain why the x- coordinates of the points where the graphs of the equations y = f(x) and y = g(x) intersect are the solutions of the equation f(x) = g(x); find the solutions approximately (e.g., using technology to graph the functions, make tables of values, or find successive approximations). Include cases where f(x) and/or g(x) are linear, polynomial, rational, absolute value, exponential, and logarithmic functions. MAFS.912.A-REI.3.7 Solve a simple system consisting of a linear equation and a quadratic equation in two variables algebraically and graphically. For example, find the points of intersection between the line y = 3x and the circle x 2 + y 2 = 3. MAFS.912.A-REI.4.11 Explain why the x- coordinates of the points where the graphs of the equations y = f(x) and y = g(x) intersect are the solutions of the equation f(x) = g(x); find the solutions approximately (e.g., using technology to graph the functions, make tables of values, or find successive approximations). Include cases where f(x) and/or g(x) are linear, polynomial, rational, The directrix should be parallel to a coordinate axis. Students will solve a simple system of a linear equation and a quadratic equation in two variables graphically. Students will find a solution or an approximate solution for f(x) = g(x) using a graph. Students will find a solution or an approximate solution for f(x) = g(x) using a table of values. Students will demonstrate why the intersection of two functions is a solution to f(x) = g(x). Students will solve a simple system of a linear equation and a quadratic equation in two variables graphically. Students will find a solution or an approximate solution for f(x) = g(x) using a graph. Students will find a solution or an approximate solution for f(x) = g(x) using a table of values. Students will find a solution or an approximate solution for f(x) = g(x) using successive approximations that gives the solution to a given place value. Students will demonstrate why the intersection of two functions is a solution to f(x) = g(x). 10

12 Section 5, Video 6: Polynomial Identities - Part 2 Section 6, Video 1: Recognizing End Behavior of Graphs of Polynomials Section 6, Video 2: Using Successive Differences Section 6, Video 3: Recognizing Even and Odd Functions Section 6, Video 4: Understanding Zeroes of Polynomials MAFS.912.A-APR.3.4 Prove polynomial identities and use them to describe numerical relationships. MAFS.912.A-SSE.1.2 Use the structure of an expression to identify ways to rewrite it. For example, see x 4 y 4 as (x 2 ) 2 (y 2 ) 2, thus recognizing it as a difference of squares that can be factored as (x 2 y 2 )(x 2 + y 2 ). MAFS.912.A-APR.3.4 Prove polynomial identities and use them to describe numerical relationships. MAFS.912.F-IF.2.4 For a function that models a relationship between two quantities, interpret key features of graphs and tables in terms of the quantities and sketch graphs showing key features given a verbal description of the relationship. MAFS.912.F-IF.2.4 For a function that models a relationship between two quantities, interpret key features of graphs and tables in terms of the quantities and sketch graphs showing key features given a verbal description of the relationship. MAFS.912.F-IF.2.6 Calculate and interpret the average rate of change of a function (presented symbolically or as a table) over a specified interval. Estimate the rate of change from a graph. MAFS.912.F-BF.2.3 Identify the effect on the graph of replacing f(x) by f(x) + k, kf(x), f(kx), and f(x + k) for specific values of k (both positive and negative); find the value of k given the graphs. Experiment with cases and illustrate an explanation of the effects on the graph using technology. Include recognizing even and odd functions from their graphs and algebraic expressions for them. MAFS.912.F-IF.2.4 For a function that models a relationship between two quantities, interpret key polynomial identities to describe numerical relationships. Students will rewrite algebraic expressions in different equivalent forms by recognizing the expression s structure. Students will use the structure of algebra to complete an algebraic proof of a polynomial identity. Students will use polynomial identities to describe numerical relationships. Students will differentiate between different types of functions using a variety of descriptors (e.g., graphical, verbal, numerical, and algebraic). Students will differentiate between different types of functions using a variety of descriptors (e.g., graphical, verbal, numerical, and algebraic). Students will calculate and interpret the average rate of change of a continuous function that is represented algebraically, in a table of values, on a graph, or as a set of data with a real-world context. Students will recognize even and odd functions from their graphs and equations. Students will determine and relate the key features of a function within a real-world context by 12

13 Section 6, Video 5: Factoring Polynomials Section 6, Video 6: Graphing Polynomials features of graphs and tables in terms of the quantities and sketch graphs showing key features given a verbal description of the relationship. Key features include: intercepts; intervals where the function is increasing, decreasing, positive, or negative; relative maximums and minimums; symmetries; end behavior; and periodicity. MAFS.912.A-APR.2.3 Identify zeros of polynomials when suitable factorizations are available and use the zeros to construct a rough graph of the function defined by the polynomial. MAFS.912.A-SSE.2.3 Choose and produce an equivalent form of an expression to reveal and explain properties of the quantity represented by the expression. MAFS.912.A-SSE.1.2 Use the structure of an expression to identify ways to rewrite it. For example, see x 4 y 4 as (x 2 ) 2 (y 2 ) 2, thus recognizing it as a difference of squares that can be factored as (x 2 y 2 )(x 2 + y 2 ). MAFS.912.A-APR.2.3 Identify zeros of polynomials when suitable factorizations are available and use the zeros to construct a rough graph of the function defined by the polynomial. MAFS.912.F-IF.3.7c Graph functions expressed symbolically and show key features of the graph by hand in simple cases and using technology for more complicated cases. Graph polynomial examining the function s graph. Students will use a given verbal description of the relationship between two quantities to label key features of a graph of a function that models the relationship. Students will interpret statements that use function notation within the real-world context given. Students will find the zeros of a polynomial function when the polynomial is in factored form. Students will identify a rough graph of a polynomial function in factored form by examining the zeros of the function. Students will use the x-intercepts of a polynomial function and end behavior to graph the function. Students will identify and interpret key features of a graph within the real-world context that the function represents. Students will rewrite algebraic expressions in different equivalent forms using factoring techniques (e.g., common factors, grouping, the difference of two squares, the sum or difference of two cubes, or a combination of methods to factor completely) or simplifying expressions (i.e., combining like terms, using the distributive property, and using other operations with polynomials). Students will rewrite algebraic expressions in different equivalent forms by recognizing the expression s structure. Students will use the x-intercepts of a polynomial function and end behavior to graph the function. Students will rewrite algebraic expressions in different equivalent forms using factoring techniques (e.g., common factors, grouping, the difference of two squares, the sum or difference of two cubes, or a combination of methods to factor completely) or simplifying expressions (i.e., combining like terms, using the distributive 13

14 functions, identifying zeros when suitable factorizations are available and showing end behavior. MAFS.912.A-SSE.2.3 Choose and produce an equivalent form of an expression to reveal and explain properties of the quantity represented by the expression. property, and using other operations with polynomials). Students will rewrite algebraic expressions in different equivalent forms by recognizing the expression s structure. MAFS.912.A-SSE.1.2 Use the structure of an expression to identify ways to rewrite it. For example, see x 4 y 4 as (x 2 ) 2 (y 2 ) 2, thus recognizing it as a difference of squares that can be factored as (x 2 y 2 )(x 2 + y 2 ). Section 7, Video 1: Rewriting Rational Expressions Section 7, Video 2: Synthetic Division Section 7, Video 3: The Remainder Theorem Section 7, Video 4: Solving Rational Equations MAFS.912.A-APR.2.3 Identify zeros of polynomials when suitable factorizations are available and use the zeros to construct a rough graph of the function defined by the polynomial. MAFS.912.A-APR.4.6 Rewrite simple rational expressions in different forms; write a(x)/b(x) in the form q(x) + r(x)/b(x), where a(x), b(x), q(x), and r(x) are polynomials with the degree of r(x) less than the degree of b(x), using inspection, long division, or, for the more complicated examples, a computer algebra system. MAFS.912.A-APR.2.2 Know and apply the Remainder Theorem: For a polynomial p(x) and a number a, the remainder on division by x a is p(a), so p(a) = 0 if and only if (x a) is a factor of p(x). MAFS.912.A-REI.1.2 Solve simple rational and radical equations in one variable, and give Students will rewrite a rational expression as the quotient in the form of a polynomial added to the remainder divided by the divisor. Students will use polynomial long division to divide a polynomial by a polynomial. Students will use the Remainder Theorem to determine if (x a) is a factor of a polynomial. Students will use the Remainder Theorem to determine the remainder of p(x)/(x a). Students will solve a rational equation in one variable. Students will justify algebraically why a solution is extraneous. 14

15 Section 7, Video 5: Solving Systems of Rational Equations examples showing how extraneous solutions may arise. MAFS.912.A-REI.4.11 Explain why the x- coordinates of the points where the graphs of the equations y = f(x) and y = g(x) intersect are the solutions of the equation f(x) = g(x); find the solutions approximately (e.g., using technology to graph the functions, make tables of values, or find successive approximations). Include cases where f(x) and/or g(x) are linear, polynomial, rational, absolute value, exponential, and logarithmic functions. Students will demonstrate why the intersection of two functions is a solution to f(x) = g(x). Students will solve a rational equation in one variable. Students will justify algebraically why a solution is extraneous. Section 7, Video 6: Using Rational Equations to Solve Real World Problems Section 7, Video 7: Graphing Rational Functions MAFS.912.A-REI.1.2 Solve simple rational and radical equations in one variable, and give examples showing how extraneous solutions may arise. MAFS.912.A-CED.1.1 Create equations and inequalities in one variable and use them to solve problems. Include equations arising from linear and quadratic functions and simple rational, absolute, and exponential functions. MAFS.912.F-IF.3.7d Graph rational functions, identifying zeros and asymptotes when suitable factorizations are available and showing end behavior. MAFS.912.F-IF.3.9 Compare properties of two functions each represented in a different way (algebraically, graphically, numerically in tables, or by verbal descriptions). For example, given a graph of one quadratic function and an algebraic expression for another, say which has the larger maximum. Students will write an equation in one variable that represents a real-world context. Students will write and solve an equation in one variable that represents a real-world context. Students will graph a function using key features. 15

17 rearrange Ohm s law, V = IR, to highlight resistance, R. MAFS.912.F-IF.3.7 b Graph functions expressed symbolically and show key features of the graph by hand in simple cases and using technology for more complicated cases. b. Graph square root, cube root, and piecewisedefined functions, including step functions and absolute value functions. Section 8, Video 5: Graphing Square Root and Cube Root Functions- Part One MAFS.912.F-IF.2.4 For a function that models a relationship between two quantities, interpret key features of graphs and tables in terms of the quantities and sketch graphs showing key features given a verbal description of the relationship. Key features include: intercepts; intervals where the function is increasing, decreasing, positive, or negative; relative maximums and minimums; symmetries; end behavior; and periodicity. MAFS.912.F-IF.3.9 Compare properties of two functions each represented in a different way (algebraically, graphically, numerically in tables, or by verbal descriptions). For example, given a graph of one quadratic function and an algebraic expression for another, say which has the larger maximum. MAFS.912.F-IF.2.5 Relate the domain of a function to its graph and, where applicable, to the quantitative relationship it describes. For example, if the function h(n) gives the number of personhours it takes to assemble n engines in a factory, then the positive integers would be an appropriate domain for the function. 17

18 MAFS.912.F-BF.2.3 Identify the effect on the graph of replacing f(x) by f(x) + k, kf(x), f(kx), and f(x + k) for specific values of k (both positive and negative); find the value of k given the graphs. Experiment with cases and illustrate an explanation of the effects on the graph using technology. Include recognizing even and odd functions from their graphs and algebraic expressions for them. MAFS.912.F-IF.3.7 b Graph functions expressed symbolically and show key features of the graph by hand in simple cases and using technology for more complicated cases. b. Graph square root, cube root, and piecewisedefined functions, including step functions and absolute value functions. Section 8, Video 6: Graphing Square Root and Cube Root Functions Part Two MAFS.912.F-IF.2.4 For a function that models a relationship between two quantities, interpret key features of graphs and tables in terms of the quantities and sketch graphs showing key features given a verbal description of the relationship. Key features include: intercepts; intervals where the function is increasing, decreasing, positive, or negative; relative maximums and minimums; symmetries; end behavior; and periodicity. Students will graph a function using key features. MAFS.912.F-IF.3.9 Compare properties of two functions each represented in a different way (algebraically, graphically, numerically in tables, or by verbal descriptions). For example, given a graph of one quadratic function and an algebraic expression for another, say which has the larger maximum. 18

19 MAFS.912.F-IF.2.5 Relate the domain of a function to its graph and, where applicable, to the quantitative relationship it describes. For example, if the function h(n) gives the number of personhours it takes to assemble n engines in a factory, then the positive integers would be an appropriate domain for the function. Section 9, Video 1: Real World Exponential Growth and Decay - Part 1 MAFS.912.F-BF.2.3 Identify the effect on the graph of replacing f(x) by f(x) + k, kf(x), f(kx), and f(x + k) for specific values of k (both positive and negative); find the value of k given the graphs. Experiment with cases and illustrate an explanation of the effects on the graph using technology. Include recognizing even and odd functions from their graphs and algebraic expressions for them. MAFS.912.A-CED.1.1 Create equations and inequalities in one variable and use them to solve problems. Include equations arising from linear and quadratic functions and simple rational, absolute, and exponential functions. MAFS.912.A-CED.1.2 Create equations in two or more variables to represent relationships between quantities; graph equations on coordinate axes with labels and scales. MAFS.912.A-CED.1.3 Represent constraints by equations or inequalities and by systems of equations and/or inequalities, and interpret solutions as viable or nonviable options in a modeling context. For example, represent inequalities describing nutritional and cost constraints on combinations of different foods. Students will write an equation in one variable that represents a real-world context. Students will write and solve an equation in one variable that represents a real-world context. Students will identify the quantities in a real-world situation that should be represented by distinct variables. Students will write constraints for a real-world context using equations, inequalities, a system of equations, or a system of inequalities. 19

20 MAFS.912.F-BF.1.1b Write a function that describes a relationship between two quantities. Combine standard function types using arithmetic operations. For example, build a function that models the temperature of a cooling body by adding a constant function to a decaying exponential, and relate these functions to the model. MAFS.912.A-CED.1.1 Create equations and inequalities in one variable and use them to solve problems. Include equations arising from linear and quadratic functions and simple rational, absolute, and exponential functions. MAFS.912.A-CED.1.2 Create equations in two or more variables to represent relationships between quantities; graph equations on coordinate axes with labels and scales. Students will write an equation in one variable that represents a real-world context. Students will write and solve an equation in one variable that represents a real-world context. Students will identify the quantities in a real-world situation that should be represented by distinct variables. Students will write constraints for a real-world context using equations, inequalities, a system of equations, or a system of inequalities. Section 9, Video 2: Real World Exponential Growth and Decay - Part 2 MAFS.912.A-CED.1.3 Represent constraints by equations or inequalities and by systems of equations and/or inequalities, and interpret solutions as viable or nonviable options in a modeling context. For example, represent inequalities describing nutritional and cost constraints on combinations of different foods. MAFS.912.F-BF.1.1b Write a function that describes a relationship between two quantities. Combine standard function types using arithmetic operations. For example, build a function that models the temperature of a cooling body by adding a constant function to a decaying exponential, and relate these functions to the model. 20

21 Section 9, Video 3: Interpreting Exponential Equations Section 9, Video 4: Euler s Number Section 9, Video 5: Graphing Exponential Functions Part One MAFS.912.F-IF.3.8b Write a function defined by an expression in different but equivalent forms to reveal and explain different properties of the function. b. Use the properties of exponents to interpret expressions for exponential functions. For example, identify percent rate of change in functions such as y = (1.02)t, y = (0.97)t, t y = (1.01)12t, and y = (1.2)10 and classify them as representing exponential growth or decay. MAFS.912.A-CED.1.1 Create equations and inequalities in one variable and use them to solve problems. Include equations arising from linear and quadratic functions and simple rational, absolute, and exponential functions. MAFS.912.A-SSE.2.3c Use the properties of exponents to transform expressions for exponential functions. For example, the expression 1.15t can be rewritten as (1.151/12)12 (1.012)12t to reveal the approximate equivalent monthly interest rate if the annual rate is 15%. MAFS.912.A-SSE.1.1b Interpret complicated expressions by viewing one or more of their parts as a single entity. For example, interpret P(1 + r)n as the product of P and a factor not depending on P. MAFS.912.F-IF.2.4 For a function that models a relationship between two quantities, interpret key features of graphs and tables in terms of the quantities and sketch graphs showing key features Students will classify the exponential function as exponential growth or decay by examining the base, and students will give the rate of growth or decay. Students will use the properties of exponents to write an exponential function defined by an expression in different but equivalent forms to reveal and explain different properties of the function, and students will determine which form of the function is the most appropriate for interpretation for a real-world context. Students will write an equation in one variable that represents a real-world context. Students will rewrite algebraic expressions in different equivalent forms by recognizing the expression s structure. Students will use equivalent forms of an exponential expression to interpret the expression s terms, factors, coefficients, or parts in terms of the real-world situation the expression represents. Students will find a solution or an approximate solution for f(x) = g(x) using a graph. Students will find a solution or an approximate solution for f(x) = g(x) using a table of values. 21

22 given a verbal description of the relationship. Key features include: intercepts; intervals where the function is increasing, decreasing, positive, or negative; relative maximums and minimums; symmetries; end behavior; and periodicity. Section 9, Video 6: Graphing Exponential Functions Part Two MAFS.912.A-REI.4.11 Explain why the x- coordinates of the points where the graphs of the equations y = f(x) and y = g(x) intersect are the solutions of the equation f(x) = g(x); find the solutions approximately (e.g., using technology to graph the functions, make tables of values, or find successive approximations). Include cases where f(x) and/or g(x) are linear, polynomial, rational, absolute value, exponential, and logarithmic functions. MAFS.912.F-IF.2.4 For a function that models a relationship between two quantities, interpret key features of graphs and tables in terms of the quantities and sketch graphs showing key features given a verbal description of the relationship. Key features include: intercepts; intervals where the function is increasing, decreasing, positive, or negative; relative maximums and minimums; symmetries; end behavior; and periodicity. MAFS.912.A-REI.4.11 Explain why the x- coordinates of the points where the graphs of the equations y = f(x) and y = g(x) intersect are the solutions of the equation f(x) = g(x); find the solutions approximately (e.g., using technology to graph the functions, make tables of values, or find successive approximations). Include cases where f(x) and/or g(x) are linear, polynomial, rational, absolute value, exponential, and logarithmic functions. Students will find a solution or an approximate solution for f(x) = g(x) using a graph. Students will find a solution or an approximate solution for f(x) = g(x) using a table of values. Students will graph by applying a given transformation to a function. Students will identify differences and similarities between a function and its transformation. 22

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