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1. |
Choose the graph that is not a function. |
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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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2. |
Determine which equation represents a function. |
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A. |
x = y2 - 1 |
B. |
x = 4 |
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C. |
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D. |
y = -2x + 1 |
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Hint |
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3. |
The temperature f(x) of water in a lake in degrees Fahrenheit is estimated by the function shown below, where x is the depth in feet of the water. What would be the temperature of water 30 feet below the surface? |
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A. |
71.25°F |
B. |
33°F |
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C. |
111°F |
D. |
63°F |
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Hint |
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4. |
Is the relation shown in the graph a function? Why or why not? |
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A. |
No, the relation contains the ordered pairs (3, -1) and (3, 2). |
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B. |
Yes, the ordered pairs (-3, 2), (-1, 1), and (3, -1) form a straight line. |
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C. |
No, the relation contains the ordered pairs (0, -1) and (3, -1). |
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D. |
Yes, the relation contains very few ordered pairs. |
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Hint |
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5. |
Graph the relation represented by y = x2 – x + 1. |
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A. |
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B. |
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D. |
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Hint |
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