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1. |
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 the range values increase. |
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B. |
The relation is a function because for each x value, there is exactly one y value. |
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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 not a function because only a line can be a function. |
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Hint |
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2. |
Given the function f(x) = x2 + 9, find f(-3). |
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A. |
12 |
B. |
18 |
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C. |
0 |
D. |
6 |
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Hint |
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3. |
Which function is not linear? |
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A. |
f(x) = 2x3 |
B. |
f(x) = 14x + 7 |
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C. |
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D. |
f(x) = 8 |
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Hint |
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4. |
Find the y-intercept of the graph of 2x - 5y = 10. |
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A. |
2 |
B. |
5 |
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C. |
-2 |
D. |
0 |
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Hint |
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5. |
State the slope and y-intercept of the graph of -y = -0.9x + 4. |
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A. |
m = 4, b = -0.9 |
B. |
m = 0.9, b = -4 |
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C. |
m = -4, b = 0.9 |
D. |
m = -0.9, b = 4 |
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Hint |
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6. |
When Kristin works 8 hours, she earns $60. When she works 20 hours, she earns $150. Write a linear equation that describes her earnings. Assume that the changes increase linearly. |
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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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7. |
If g(x) = |x + 3|, find g(-7). |
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A. |
10 |
B. |
-4 |
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C. |
4 |
D. |
-7 |
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Hint |
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8. |
Graph the line through (2, 3) that is perpendicular to the line with equation 2x + 5y = 1. |
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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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9. |
Choose the line that has a slope of zero. |
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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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10. |
For which scatter plot will a good line of fit have a negative y-intercept? |
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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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11. |
A line of fit is drawn on a scatter plot showing the number of pets owned by automobile owners and the number of miles driven each month. What would probably be the best description of the slope of this line? |
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A. |
negative |
B. |
positive |
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C. |
zero |
D. |
undefined |
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Hint |
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12. |
What type of function is shown in the graph? |
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A. |
absolute value function |
B. |
step function |
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C. |
piecewise function |
D. |
constant function |
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Hint |
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13. |
What is the inequality represented in the graph? |
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A. |
x + 2y  4 |
B. |
x + 2y > 4 |
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C. |
x + 2y  4 |
D. |
x + 2y > 4 |
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Hint |
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14. |
What is the inequality represented in the graph? |
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A. |
3x – 2y 0 |
B. |
3x + 2y 0 |
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C. |
3x – 2y 0 |
D. |
3x + 2y 0 |
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Hint |
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