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1. |
Find the vertex of the graph of f(x) = x2 + 4x - 5. |
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A. |
(0, -5) |
B. |
(-2, 9) |
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C. |
(-2, -9) |
D. |
(2, 7) |
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Hint |
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2. |
What is the y-intercept of the function y = 2x2 + 1 |
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A. |
3 |
B. |
1 |
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C. |
none |
D. |
0 |
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Hint |
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3. |
Find the minimum value of  . |
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A. |
(2, 7) |
B. |
2 |
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C. |
7 |
D. |
11 |
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Hint |
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4. |
In the equation y = x2 – 5, what is the axis of symmetry, and what is the minimum? |
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A. |
x = 0, min = –5 |
B. |
x = –5, min = 0 |
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C. |
x = 0, min =  |
D. |
x = , min = 0 |
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Hint |
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5. |
Which of the following graphs best represents the function y = –x2 + 7x + 8? |
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A. |
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B. |
 |
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C. |
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D. |
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Hint |
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