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1. |
What is the domain and range of  ? |
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A. |
D: 
R:  |
B. |
D: 
R:  |
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C. |
D:
R: |
D. |
D:
R: |
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Hint |
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2. |
What are the x- and y-intercepts of  ? |
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A. |
x: no intercept, y: |
B. |
x:, y: –5 |
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C. |
x: 5, y: |
D. |
x: –5, y: |
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Hint |
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3. |
Is the inverse of a quadratic function a square root function? |
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A. |
It is a square root function only if the range is restricted to nonnegative numbers. |
B. |
No. |
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C. |
It is a square root function only if it is a quadratic function that opens up. |
D. |
Yes. |
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Hint |
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4. |
Which of the following points will not be included in the graph of  ? |
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A. |
(2, 4) |
B. |
(4, 6) |
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C. |
(-2, 4) |
D. |
(3, 9) |
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Hint |
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5. |
A square root function,  , can be used to represent income made on an investment, with x being the amount originally spent, and f(x) being the profit. How much money would have to be spent in order to make $50? |
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A. |
$20 |
B. |
$7.91 |
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C. |
$2050 |
D. |
$2000 |
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Hint |
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