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1. |
What is the y-intercept of the graph of y = 4x - 2? |
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A. |
0 |
B. |
-1 |
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C. |
-2 |
D. |
 |
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Hint |
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2. |
For equations of the form y = ax, where a is a constant, what is true about a if the y-values change little for small values of x, but increase quickly for large x values? |
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A. |
a > 1 |
B. |
0 < a < 1 |
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C. |
a = 1 |
D. |
–1 < a < 0 |
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Hint |
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3. |
Use a graph in order to approximate  . |
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A. |
0.0045 |
B. |
112.6 |
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C. |
133.4 |
D. |
0.0089 |
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Hint |
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4. |
A guest on a talk show tends to receive many phone calls right after she is on the show, and then the calls become less frequent. This can be represented by the equation y = 30(0.92)d, where y is the number of phone calls after d days. How many phone calls should she expect after a week? |
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A. |
17 |
B. |
23 |
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C. |
28 |
D. |
2 |
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Hint |
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5. |
Given the coordinates (0, 3), (1, 11), (2, 19), (3, 27), would a graph of these points exhibit exponential behavior? |
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A. |
no, it would display linear behavior |
B. |
yes, exponential behavior only |
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C. |
no, it would not display exponential or linear behavior |
D. |
yes, exponential and linear behavior |
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Hint |
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