1. April 10, 2013
Today:
Warm-Up: Review for Final Exam
All Class Work from Mon.& Tues
due Today

2. Warm-Up/Final Exam Review:
1. If the parabola y = x2 is flipped upside down, made 5
times as wide, and shifted 8 units down the y-
axis, write the equation for the new parabola.
y = -⅕x2 - 8
2. If the parabola y = x2 is flipped upside down, made
twice as narrow, and shifted 6 units up the y-axis, write
the equation for the new parabola.
y = -⅕x2 - 8

3. Warm-Up/Final Exam Review:
3. Graph the parabola f(x) = 2x2 - 6x - 8. Name the
zeros, the vertex coordinates, and the axis of symmetry.
4. Find the vertex of the parabola y = -2x2 - 12x - 16.

4. Warm-Up/Final Exam Review:
5. Find the roots of y = -x2 + 4x - 4
6. A golfer hits a golf ball. The quadratic function y = -16x2 + 80x
gives the time x seconds after the golf ball is at height 0 feet. How
long does it take for the golf ball to return to the ground?
A) 16 sec C) 10 sec
B) 5 sec D) 80 sec

5. Warm-Up/Final Exam Review:
Solve the quadratic equation -8x2 + 48x - 72 = 0
A) 3 C) 2
B) - 3/2 D) –3
Solve x2 = - 4 by using square roots
A) The solutions are 2 C) There is no solution.
and –2.
B) The solution is 2. D) The solution is –2.

6. Warm-Up/Final Exam Review:
Solve: 64x2 - 121 = 0, by using square roots
What is the axis of symmetry for y = (x + 3)² + 4?
Solve by using square roots

7. Class Work
Problems 1 - 9; show all work

9. Warm-Up/Final Exam Review:

10. Warm-Up/Final Exam Review:
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