1. 1.) Examine the graph below

2. What is the axis of symmetry of the quadratic equation?B
U6C1b
x-intercept
X-intercept
Correct
y-intercept c
x = 1 D
x = -3

3. 2.) Examine the graph below

4. What is the vertex of the equation to the left?
(3, 0) A
(-1, 0) B
U6C1a
Zero
Switched x and y values
correct
(-4, 1) C
(1, -4) D

5. 3.) A swim team member performs a dive from a 14-foot-high springboard. The parabola below shows the path of his dive.

6. Which equation represents the axis of symmetry?B
U6C2b
CORRECT
Maximum value, x =
Y =
Maximum value, y =
y = 3 C
y = 23 D

7. 4.) A swim team member performs a dive from a 14-foot-high springboard. The parabola below shows the path of his dive.

8. How far is the diver from the springboard when he is at his maximum height?
8 feet
3 feet C
U1C1b
Distance when he hits the water
Height of the springboard (starting value)
CORRECT
Maximum height
14 feet B
23 feet D

9. 5.) Find the axis of symmetry of the equation given below.C A
U1C1a
Forgot –b and for 2*a (b/a)
Forgot 2a (-b/a)
Forgot –b (b/2a)
CORRECT!
x = 6
x = 3 B D

10. 6.) Find the vertex of the equation given below.
(0, -36)
(4, -36) C A
U1C1a
Lack understanding of concept
Assume if x = 0 for vertex, y = 0
CORRECT!
Assume that x = 4 for vertex, then found y
(0, 0)
(4, 28) B D

11. SPR 1 Hadley throws a rock of a 10-foot cliff into a lake below
SPR 1 Hadley throws a rock of a 10-foot cliff into a lake below. The height of a rock is modeled by the equation y = -2x² + 18x where x represents the number of seconds since the rock was released and y represents the number of feet above or below the water’s surface. When is the rock furthest from the water’s surface?
ANSWER: 4.5 seconds (the rock is furthest from the water’s surface when it is at the vertex: x = 4.5 seconds, y = 24.5 feet)

12. SPR 2 The y-intercept of the equation below is (0, 3)
SPR 2 The y-intercept of the equation below is (0, 3) Calculate the rate of change between the vertex and the y-intercept of this equation.
Answer: -2
[Found by calculating the slope of the line between the y-int (0,3) and vertex (2,-1)]