Integrated Math 1 Honors Module 10 Structures of Expressions Ready, Set, Go! Homework Solutions
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1 1 Integrated Math 1 Honors Module 10 Structures of Expressions Ready, Set, Go! Homework Solutions Adapted from The Mathematics Vision Project: Scott Hendrickson, Joleigh Honey, Barbara Kuehl, Travis Lemon, Janet Sutorius 2013 Mathematics Vision Project MVP In partnership with the Utah State Office of Education Licensed under the Creative Commons Attribution NonCommercial ShareAlike 3.0 Unported license.
2 Name Structures of Expressions 10.1H Ready, Set, Go! Ready Topic: Standard form of a quadratic equation The standard form of a quadratic equation is defined as ( ). Multiply and write each product in the form. Then identify a, b, and c. 1. ( ) 2. ( )( ) 3. ( )( ) 2 a. 1 a. 2 a. 9 b. b. b. 0 c. 0 c. 1 c. 4. ( )( ) 5. ( ) 6. ( ) Set a. 1 a. 1 a. b. 12 b. b. c. 36 c. 9 c. Topic: Writing the equation of a parabola in vertex form. Find a value for ω such that the graph will have the specified number of x-intercepts x-intercepts 8. 1 x intercept 9. no x intercepts Sample Answers: Sample Answer: ( ) Sample Answers:
3 For each function, identify the vertex, direction of opening, and the equation of the axis of symmetry. Then complete the table of values so that the table includes the vertex and two symmetric points on each side of the axis of symmetry. 10. ( ) Direction of Opening: up Axis of Symmetry: ( ) Direction of Opening: up Axis of Symmetry:
4 4 12. ( ) Direction of Opening: up Axis of Symmetry: ( ) Direction of Opening: down Axis of Symmetry: ( ) Direction of Opening: up Axis of Symmetry: 3
5 5 Topic: Writing equations of parabolas in vertex form. Write the vertex form of the following quadratic functions ( ) ( ) ( ) ( ) Go Use the table to identify the vertex, the equation for the axis of symmetry (A.S.), and state the number of x intercept(s) the parabola will have, if any. Will the vertex be a minimum or a maximum? 19. x y x y x y x y A.S.: x-inter: 2 max or min? min A.S.: x-inter: 0 max or min? min A.S.: x-inter: 2 max or min? max A.S.: x-inter: 0 max or min? max
6 Name Structures of Expressions 10.2H Ready, Set, Go! Ready Topic: Rational functions 1. Use the graph of ( ) to answer the following questions: 6 a. What is the domain of ( )? b. What is the range of ( )? c. Complete the table of values for ( ) : ( ) undefined Write expressions for the given area models. Write one expression that contains parentheses (factored form) and one that does not (standard form). a. ( )( ) b. ( )( )
7 7 Set Topic: Completing the square Multiply. Show each step. 3. ( )( ) 4. ( )( ) 5. ( ) 6. ( ) 7. Write a rule for finding the coefficient of the x-term when multiplying and simplifying ( ). ( ) Fill in the number that completes the square. Then write the trinomial in vertex form ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( )
8 Go Topic: Identifying vertex, axis of symmetry, domain, range, and graphing quadratic functions in vertex form. For each quadratic function written in vertex form ( ( ) ), identify the vertex, the equation of the axis of symmetry, direction of opening (up/down), if the graph has a maximum or minimum, if the graph is wider/narrower or the same width as, domain, and range. Then make a table of values with the vertex and 2 symmetric points left and right of the vertex ( ) Equation of Axis of Symmetry: Direction of Opening (up or down): up Max or Min: Min Width is wider, narrower or same as Narrower Domain: ( ) Range: ) Intervals of Increase/Decrease: Increase: ( ) Decrease: ( ) Table of Values: Graph: ( ) Equation of Axis of Symmetry: Direction of Opening (up or down): down Max or Min: Max Width is wider, narrower or same as Wider Domain: ( ) Range: ( ] Intervals of Increase/Decrease: Increase: ( ) Decrease: ( ) Table of Values: Graph:
9 9 19. ( ) Equation of Axis of Symmetry: Direction of Opening (up or down): Up Max or Min: Min Width is wider, narrower or same as Same Domain: ( ) Range: ) Intervals of Increase/Decrease: Increase: ( ) Decrease: ( ) Table of Values: Graph: ( ) Equation of Axis of Symmetry: Direction of Opening (up or down): down Max or Min: Max Width is wider, narrower or same as Narrower Domain: ( ) Range: ( ] Intervals of Increase/Decrease: Increase: ( ) Decrease: ( ) Table of Values: Graph: 3 5 3
10 Name Structures of Expressions 10.3H Ready, Set, Go! Ready Topic: Multiplying binomials using an area model. Multiply each set of binomials using an area model. If there is a coefficient in the question, distribute the coefficient last. 1. ( )( ) 2. ( )( ) ( )( ) 4. ( )( ) Set Topic: Completing the square Complete the square on each function to write the function in vertex form, ( ) ( ) ( )
11 ( ) ( ) ( ) ( ) ( ) ( ) Topic: Converting from vertex form to standard form Multiply out the function to write it in standard form,. 13. ( ) 14. ( ) 15. ( ) 16. ( ) Topic: Completing the square to write quadratic functions in vertex form. Use an area model to figure out how to complete the square so the equation can be written in vertex form ( ( ) ). Draw an area diagram like you created in class with Optima s quilt blocks. Write each equation in vertex form ( ) ( ) ( ) ( )
12 12 Go Topic: Features of quadratic functions and graphing quadratic functions For each quadratic function, identify the vertex, equation of axis of symmetry, domain, and range. Then complete the table of values with at least two symmetric values on each side of the vertex and graph the function. 21. ( ) Equation of Axis of Symmetry: Domain: ( ) Range: ) Intervals of Increase/Decrease: Increase: ( ) Decrease: ( ) Table of Values: 22. ( ) Equation of Axis of Symmetry: Domain: ( ) Range: ( ] Intervals of Increase/Decrease: Increase: ( ) Decrease: ( ) Table of Values: Graph: Graph:
13 13 Topic: Writing quadratic functions in vertex form. Use the given information to write the equation of each quadratic function in vertex form. 23. Vertex ( ) and passes through the point ( ) ( ) ( ) ( ) Topic: Finding y-intercepts Find the y-intercept of each function. Hint: the y-intercept is the point where the function crosses the y-axis (when ) ( ) ( ) 28. ( ) 29. ( ) ( ) ( )
14 Name Structures of Expressions 10.4H Ready, Set, Go! Ready Topic: Creating binomial quadratics Multiply. 1. ( ) 2. ( ) Are the answers to problems 1 & 2 quadratics? Justify. Yes, they are both of the form 4. Write a rule for factoring a quadratic, written in standard form ( ) when c equals 0. ( ) Multiply. 5. ( )( ) 6. ( )( ) 7. ( )( ) 8. ( )( ) 9. The answers to problems 5, 6, 7, & 8 are quadratics. Which coefficient, a, b, or c, equals 0? Why does this coefficient equal 0? because the coefficients of the cancel each other out. terms (after multiplying the binomials) are opposites and 10. Multiply ( )( ) (Show all of your steps.) Then multiply ( )( ). 11. Multiply ( )( ) (Show all of your steps.) Then multiply ( )( ).
15 15 Set Topic: Factoring quadratic expressions Factor the following quadratic expressions into two binomials ( )( ) ( )( ) ( )( ) ( )( ) ( )( ) ( )( ) ( )( ) ( )( ) ( )( ) ( )( ) ( )( ) ( )( ) Go Topic: Completing the square to write quadratic functions in vertex form and identifying features of quadratic functions. Write each quadratic function in vertex form by completing the square. Then identify the vertex, equation of the axis of symmetry, and domain & range Vertex Form: ( ) Vertex Form: ( ) Equation of Axis of Symmetry: Equation of Axis of Symmetry: Domain: ( ) Domain: ( ) Range: ) Range: ) Interval of Increase: ( ) Interval of Increase: ( ) Interval of Decrease: ( ) Interval of Decrease: ( ) 26. Vertex Form: ( ) Equation of Axis of Symmetry: Domain: ( ) Range: ) Interval of Increase: ( ) Interval of Decrease: ( )
16 16 Topic: Converting from vertex form to standard form. Convert each function written in vertex form into standard form. 27. ( ) 28. ( ) 29. ( )
17 Name Structures of Expressions 10.5H Ready, Set, Go! Ready Topic: Zero product property Find the value(s) of that make each product equal to ( )( ) 3. ( )( ) ( )( ) 5. ( )( ) 6. ( )( ) 7. ( )( ) 8. ( )( ) 9. ( )( ) 10. Explain how you can find the value of that makes the product equal to 0 without using distribution. Set the factor containing equal to 0 and solve for. Set Topic: Factoring quadratic expressions Factor the following quadratic expressions into two binomials ( )( ) ( )( ) ( )( ) ( )( ) ( )( ) ( )( )
18 ( )( ) ( )( ) ( )( ) ( )( ) ( )( ) ( )( ) ( )( ) ( )( ) ( )( ) Go Topic: Converting between standard form, vertex form, and factored forms. Convert each function into the other two forms indicated. Hint: In order to go from vertex form to factored form, write function in standard form first ( ) Vertex Form: ( ) Standard Form: Factored Form: ( )( ) Factored Form: ( )( ) 28. ( )( ) Standard Form: Vertex Form: ( )
19 Name Structures of Expressions 10.6H Ready, Set, Go! Ready Topic: Multiplying binomials using a two-way table. Multiply the following binomials using the given two-way table to assist you. Example: Multiply ( )( ) ( )( ) 2. ( )( ) 3. ( )( ) 4. ( )( ) 5. ( )( ) 6. ( )( ) 7. ( ) 8. ( ) 9. ( ) 10. What do you notice in the like-term boxes in # s 7, 8, and 9 that is different from the other problems? The like-terms in the boxes for questions 7, 8 and 9 are same, whereas the like-terms in the other problems are opposites.
20 20 Set Topic: Factored form of a quadratic function Given the factored form of a quadratic function, identify the x-intercepts and the vertex of the function. Write these functions in both standard and vertex forms. Then use the x-intercepts and the vertex to sketch a graph of the function. 11. ( )( ) 12. ( )( ) x-intercepts: x-intercepts: Standard Form: Standard Form: Vertex Form: ( ) Vertex Form: ( ) 13. ( )( ) 14. ( )( ) x-intercepts: x-intercepts: 7 Standard Form: Standard Form: Vertex Form: ( ) Vertex Form: ( )
21 ( )( ) 16. ( )( ) x-intercepts: x-intercepts: Standard Form: Standard Form: Vertex Form: ( ) Vertex Form: 17. ( )( ) 18. ( )( ) x-intercepts: x-intercepts: Standard Form: Standard Form: Vertex Form: ( ) Vertex Form: ( )
22 Convert each standard form equation into factored form and vertex form. a. b. Factored Form: ( )( ) Factored Form: ( )( ) Vertex Form: ( ) Vertex Form: ( ) c. Factored Form: ( )( ) Vertex Form: ( ) Go Topic: Factoring quadratic expressions. Factor each expression complete. Don t be afraid to use the area model to help you factor each expression. Hint: If there all the terms have a number in common (a greatest common factor), then factor this number out of every term first and then factor the remaining quadratic expression ( )( ) ( )( ) ( )( ) ( )( ) ( )( ) ( )( )
23 Name Structures of Expressions 10.7H Ready, Set, Go! Ready Topic: Writing functions in vertex form. Write each function in vertex form. Identify the vertex, axis of symmetry, direction of opening, and the domain and range of each function ( )( ) 23 Vertex Form: ( ) Vertex Form: ( ) Direction of Opening: up Direction of Opening: up Domain: ( ) Domain: ( ) Range: ) Range: ) 3. ( )( ) 4. Vertex Form: ( ) Vertex Form: ( ) Direction of Opening: down Direction of Opening: up Domain: ( ) Domain: ( ) Range: ( ] Range: )
24 24 Set Topic: Graphing and writing equations of quadratic functions One form of a quadratic function is given. Fill in the missing forms. 5. Standard form: Vertex form: Factored form: ( ) ( )( ) Table (Show the vertex and at least 2 points on each side of the vertex.) Graph x y Standard form: Vertex form: Factored form: ( ) does not factor Table (Show the vertex and at least 2 points on each side of the vertex.) Graph x y
25 25 7. Standard form: Vertex form: Factored form: ( ) ( ) Table (Show the vertex and at least 2 points on each side of the vertex.) Graph x y Standard form: Vertex form: Factored form: ( ) ( )( ) Table (Show the vertex and at least 2 points on each side of the vertex.) Graph x y
26 26 Go Topic: Converting between three forms of quadratic functions. Convert the given function into the indicated forms (standard, vertex, and/or factored forms) Factored Form: ( )( ) Factored Form: ( )( ) Vertex Form: ( ) Vertex Form: Vertex Form: ( ) Vertex Form: ( ) 13. ( )( ) 14. ( )( ) Standard Form: Standard Form: Vertex Form: ( ) Vertex Form: ( ) 15. ( ) 16. ( ) Standard Form: Standard Form: Factored Form: ( )( ) Factored Form: ( )( ) Topic: Factoring quadratic expressions. Factor the following quadratic expressions, if possible ( )( ) ( )( ) ( )( ) ( )( ) ( )( ) ( )( ) ( ) ( )( ) ( )
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