Lesson 8-‐4 HW Answers Pg. 435/ #1 – 9 (10 ques3ons)
Additional Practice 1. f (x), g (x)
2. g (x), h(x), f (x)
3. f (x), g (x), h(x)
4. f (x), h(x), g (x)
5. The graph of g (x) is narrower. Both graphs open upward. The vertex of g (x), (0, 10), is translated 10 units up from the vertex of f (x) at (0, 0). 6. The graph of g(x) is wider. Both graphs open upward. The vertex of g(x), (0, -3), is translated 3 units down from the vertex of f (x) at (0, 0). 7. The graph of g (x) is narrower. g (x) opens downward and f (x) opens upward. The vertex of g(x), (0, 8), is translated 8 units up from the vertex of f (x) at (0, 0). 8. The graph of g(x) is wider. g(x) opens downward and f (x) opens upward. The vertex 1 ), is translated _ 1 units up from the of g(x), (0, _ 4 4 vertex of f (x) at (0, 0). 9. a. -16t 2 + 400; -16t 2 + 1600 b. The graph of h2 is a vertical translation of the graph of h1: 1200 units up. c. sandbag dropped from 400 ft: 5 s; sandbag