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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. |
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B. |
x = 4 |
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C. |
y = -2x + 1 |
D. |
x = y2 - 1 |
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Hint |
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3. |
In a science experiment, students hung a cup from a spring and measured the length of the spring when candies were added to it. Their data are shown in the table below. Which statement is true? |
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A. |
The relation is a function because for each x value, there is exactly one y value. |
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B. |
The relation is not a function because only a line can be a function. |
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C. |
The relation is not a function because there are two y values for some x values. |
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D. |
The relation is a function because the range values increase. |
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Hint |
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4. |
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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5. |
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 (0, -1) and (3, -1). |
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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. |
Yes, the relation contains very few ordered pairs. |
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D. |
No, the relation contains the ordered pairs (3, -1) and (3, 2). |
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Hint |
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