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1. |
Determine the value of r so that the line through (r, 4) and (-7, 7) has a slope of . |
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A. |
-11 |
B. |
9 |
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C. |
-3 |
D. |
3 |
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Hint |
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2. |
Write the standard form of an equation of the line that passes through (3, 5) and has a slope of . |
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A. |
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B. |
undefined |
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C. |
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D. |
3x + 4y = 29 |
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3. |
What is the slope of in parallelogram ABCD? |
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A. |
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B. |
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C. |
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D. |
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4. |
Write the standard form of the equation of the line that passes through (-2, -3) and (2, -5). |
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A. |
2x - y = -1 |
B. |
x + 2y = -8 |
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C. |
2x + y = -7 |
D. |
x - 2y = -8 |
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Hint |
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5. |
Which graph is the graph of 3(y - 3) = -2x? |
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A. |
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B. |
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C. |
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D. |
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6. |
Which pair of lines graphed below are parallel? |
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A. |
k and m |
B. |
l and m |
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C. |
k and n |
D. |
l and n |
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Hint |
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7. |
Which scatter plot shows that x and y have no correlation? |
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A. |
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B. |
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C. |
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D. |
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8. |
Suppose y varies directly as x, and y = -65 when x = -26. Write a direct variation equation that relates x and y. |
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A. |
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B. |
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D. |
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9. |
Use the direct variation equation to find x when y = -34. |
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A. |
x = 153 |
B. |
x = - |
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C. |
x = -153 |
D. |
x =  |
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Hint |
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10. |
Graph 7x + 2y = -12. |
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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. |
Which equation describes the line that contains the points (-5, 2) and (3, 7)? |
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A. |
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B. |
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C. |
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D. |
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12. |
A rental car company charges $75 for a 3-day rental and $155 for a 7-day rental. Write an equation to find the amount that the rental car company will charge for any number of days. |
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A. |
y = 20x + 15 |
B. |
y = 80x |
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C. |
y = 80x – 165 |
D. |
y = 20x |
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Hint |
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13. |
Write the slope-intercept form of an equation for the line that passes through (-8, -1) and is parallel to the graph of  |
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A. |
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B. |
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C. |
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D. |
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14. |
Which relationship would most likely have a negative correlation? |
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A. |
The number of miles driven, and the number of gallons of gas in the car. |
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B. |
A person's age, and the address of the person. |
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C. |
The number of pizzas ordered, and the total price of the bill. |
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D. |
A person's height and the person's shoe size. |
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Hint |
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