9.2 and 9.3 WorksheetAnswers

9.2 Practice B

1. -6 and 1 2. no zeros 3. 5

4. x = 3.5 5. x = 3 6. x = -1

7. x = 1 8. x = 2

10. (1, -5) 11. (-2, -22_

Page 2

1. Yes. The vertex is (6.25, 625). The superhero will reach a maximum height of 625, which is greater than 612.

2. zeros are 0 and 50; the axis of symmetry is x = 25

3. vertex is (50, 30)

Page 3

4. 40 inches 5. 48 inches 6. zeros are 0 and 80

7. (40, 48) 8. D