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Splash Screen. Five-Minute Check (over Lesson 2–6) Then/Now New Vocabulary Key Concept: Parent Functions Example 1: Identify a Function Given the Graph Example 2: Describe and Graph Translations Example 3: Describe and Graph Reflections Example 4: Describe and Graph Dilations

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  1. Splash Screen

  2. Five-Minute Check (over Lesson 2–6) Then/Now New Vocabulary Key Concept: Parent Functions Example 1: Identify a Function Given the Graph Example 2: Describe and Graph Translations Example 3: Describe and Graph Reflections Example 4: Describe and Graph Dilations Example 5: Real-World Example: Identify Transformations Concept Summary: Transformations of Functions Lesson Menu

  3. A B C D Identify the type of function represented by the graph. A. linear B. piecewise C. absolute value D. parabolic 5-Minute Check 1

  4. A B C D Identify the type of function represented by the graph. A. piecewise B. linear C. parabolic D. absolute value 5-Minute Check 2

  5. A B C D A. $60 B. $101 C. $102 D. $148 5-Minute Check 3

  6. You analyzed and used relations and functions. (Lesson 2–1) • Identify and use parent functions. • Describe transformations of functions. Then/Now

  7. family of graphs • reflection • line of reflection • dilation • parent graph • parent function • constant function • identity function • quadratic function • translation Vocabulary

  8. Concept

  9. Identify a Function Given the Graph A.Identify the type of function represented by the graph. Answer: The graph is a V shape. So, it is an absolute value function. Example 1

  10. Identify a Function Given the Graph B. Identify the type of function represented by the graph. Answer: The graph is a parabola, so it is a quadratic function. Example 1

  11. A B C D A. Identify the type of function represented be the graph. A. absolute value function B. constant function C. quadratic function D. identity variation Example 1

  12. A B C D B. Identify the type of function represented be the graph. A. absolute value function B. constant function C. quadratic function D. identity variation Example 1

  13. Describe and Graph Translations Describe the translation in y = (x + 1)2. Then graph the function. Answer: The graph of the function y = (x + 1)2 is a translation of the graph of y = x2 left 1 unit. Example 2

  14. A B C D Describe the translation in y = |x – 4|. Then graph the function. A. translation of the graph y = |x| up 4 units B. translation of the graph y = |x| down 4 units C. translation of the graph y = |x| right 4 units D. translation of the graph y = |x| left 4 units Example 2

  15. Describe and Graph Reflections Describe the reflection in y = –|x|. Then graph the function. Answer: The graph of the function y = –|x| is a reflection of the graph of y = |x| across the x-axis. Example 3

  16. A B C D Describe the reflection in y = –x2. Then graph the function. A. reflection of the graph y = x2 across the x-axis B. reflection of the graph y = x2 across the y-axis C. reflection of the graph y = x2 across the line x = 1. D. reflection of the graph y = x2 across the x = –1 Example 3

  17. Describe the dilation on Then graph the function. Answer: The graph of is a dilation of the graph The graph of has a slope that is less steep than the graph of Describe and Graph Dilations Example 4

  18. A B C D Describe the dilation in y = |2x|. Then graph the function. A. dilation fo the graph of y = |x| compressed vertically B. dilation fo the graph of y = |x| stretched vertically C. dilation fo the graph of y = |x| translated 2 units up D. dilation fo the graph of y = |x| translated 2 units right Example 4

  19. Identify Transformations Example 5

  20. Identify Transformations Example 5

  21. A B C D Which of the following is not an accurate description of the transformations in the function A.+4 translates f(x) = |x| right 4 units B.–2 translates f(x) = |x| down 2 units C. translates f(x) = |x| across the x-axis D. translates f(x) = |x| right 4 units Example 5

  22. Concept

  23. End of the Lesson

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