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1. |
For the equation y = –x2 + 3x – 8, what are the values of a, b, and c? |
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A. |
a = 1, b = –3, c = 8 |
B. |
a = 2, b = 1, c = 0 |
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C. |
a = 1, b = 3, c = –8 |
D. |
a = –1, b = 3, c = –8 |
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Hint |
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2. |
What are the coordinates of the vertex for the graph of y = x2 + 2x – 8? |
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A. |
(1, 9) |
B. |
(1, –11) |
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C. |
(–1, –9) |
D. |
(–2, –8) |
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Hint |
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3. |
Suppose you have the graph of y = x2 and the graph of y = –x2. Which statement is not true about the two graphs? |
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A. |
The parabolas have the same shape and width. |
B. |
The parabolas have the same axis of symmetry. |
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C. |
Both parabolas open downward. |
D. |
The parabolas have the same vertex. |
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Hint |
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4. |
Suppose you have the graph of y = x2 and the graph of y = –3x2 + 1. Which statement is not true about the graphs? |
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A. |
The graphs have the same axis of symmetry. |
B. |
The graph of y = x2 is wider than the graph of
y = –3x2 + 1. |
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C. |
One graph opens upward, the other opens downward. |
D. |
The graphs have the same vertex. |
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Hint |
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5. |
Which table shows a correct set of values for the quadratic function
y = –x2 – 4x + 5? |
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A. |
 |
B. |
 |
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C. |
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D. |
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Hint |
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6. |
Find two numbers whose sum is 1 and whose product is –72. |
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A. |
–8 and 9 |
B. |
–8 and –9 or 8 and 9 |
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C. |
8 and –9 |
D. |
–8 and –9 |
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Hint |
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7. |
Solve 4x2 = 9x. |
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A. |
0 and  |
B. |
0 and  |
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C. |
0 and  |
D. |
4 and 9 |
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Hint |
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8. |
Use the Quadratic Formula to solve –2x2 + 3x – 7 = 0. |
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A. |
There are no real solutions for x. |
B. |
 |
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C. |
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D. |
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Hint |
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9. |
Solve 6x2 – 5x + 1. |
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A. |
x =  , x =  |
B. |
x = -2, x = -3 |
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C. |
x = 2, x = 3 |
D. |
x =  , x =  |
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Hint |
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10. |
Solve x2 – 10x + 21 = 0 by completing the square. |
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A. |
x= -7, x= -3 |
B. |
x = -4, x = -2 |
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C. |
x = 4, x= 2 |
D. |
x = 7, x = 3 |
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Hint |
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11. |
Ora has invented a new soft drink called Healthy Soda. If the can she is going to use has a volume of 27 cubic inches, what will the area of the base and the height of the can be? |
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A. |
area of base: 4.5 in2
height: 6 in. |
B. |
area of base: 6 in2
height: 4.5 in. |
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C. |
area of base: 5 in2
height: 8 in. |
D. |
area of base: 8 in2
height: 5 in. |
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Hint |
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12. |
Paco is playing volleyball with his friends. He hits the ball over the net. The formula for the ball's height is h(t) = -4.9t2 +14t + 1 Find the amount of time, t, the volleyball will travel if it is not hit. |
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A. |
0.07 seconds |
B. |
0.12 seconds |
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C. |
3.56 seconds |
D. |
2.93 seconds |
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Hint |
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13. |
If a piece of paper is folded in half four times, how many sections are formed? |
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A. |
16 |
B. |
32 |
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C. |
8 |
D. |
12 |
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Hint |
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14. |
Find the y-intercept of the function y = -2x + 2. |
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A. |
-2 |
B. |
0 |
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C. |
3 |
D. |
1 |
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Hint |
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