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1. |
What are the real roots of the quadratic equation whose related function is graphed below? |
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A. |
3 |
B. |
-1, -3 |
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C. |
-3, 1 |
D. |
3, -1 |
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Hint |
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2. |
Solve x2 – 6x + 5 = 0 by graphing. |
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A. |
5 |
B. |
1, 5 |
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C. |
-1 |
D. |
1 |
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Hint |
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3. |
Solve x2 + 4x + 4 = 0 by graphing. |
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A. |
-2 |
B. |
-2, 2 |
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C. |
4 |
D. |
-4, 4 |
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Hint |
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4. |
A quadratic function has a maximum point at (1, 4). The roots of the related quadratic equation are -1 and 3. Which is the graph of the function? |
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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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5. |
In baseball, a pop fly should be easily caught if it stays in the air for 7 seconds. Suppose a ball that is hit can be represented by the function y = –16t2 + 125t + 5, where y is the height after t seconds. Will the ball be considered an easy catch? |
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A. |
no, because t < 7 |
B. |
no, because t > 7 |
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C. |
yes, because t < 7 |
D. |
yes, because t > 7 |
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Hint |
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