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1. |
Choose the relation that is 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 = 4 |
B. |
y = -2x + 1 |
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C. |
x = y2 - 1 |
D. |
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Hint |
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3. |
What is the x-intercept of the graph below? |
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A. |
2 |
B. |
-3 |
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C. |
-2 |
D. |
3 |
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Hint |
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4. |
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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5. |
A best-fit line is drawn on a scatter plot showing the average daily temperature and the number of people at a public swimming pool. The slope of the line would probably be ________ |
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A. |
undefined. |
B. |
zero. |
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C. |
positive. |
D. |
negative. |
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Hint |
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6. |
Write an inequality to describe all the points on the coordinate plane
above y = -4. |
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A. |
y > -4 |
B. |
y > 4 |
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C. |
y < 4 |
D. |
y < -4 |
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Hint |
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7. |
Find an equation of the line that passes through (0, -6) and (5, 3). |
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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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8. |
Consider the function f (x) = -2(x + 8). Is this function a linear function? Why or why not? |
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A. |
Yes, the coefficient of x is not zero. |
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B. |
Yes, the function can be written in the form f (x) = mx + b. |
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C. |
No, the function cannot be written in the form f (x) = mx + b. |
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D. |
No, f is not a function. |
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Hint |
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9. |
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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10. |
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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11. |
A scatter plot is __________. |
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A. |
a table of data |
B. |
a line graph |
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C. |
a set of data graphed as ordered pairs in a coordinate plane |
D. |
a line graphed in a portion of Quadrant I of the coordinate plane |
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Hint |
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12. |
A cellular telephone company charges $0.20 per minute or fraction thereof. If Miguel, a customer of this company, talks on his cell phone for 23.27 minutes, what will his charges be for that phone call? |
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A. |
$4.60 |
B. |
$4.66 |
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C. |
$4.80 |
D. |
$4.65 |
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Hint |
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13. |
If  find f (-9). |
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A. |
1 |
B. |
-1 |
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C. |
5 |
D. |
-5 |
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Hint |
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14. |
Which graph shows the inequality 5x – 2y  8? |
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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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