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1. |
If y varies directly as x and y = 35 when x = 5, find y when x = 11. |
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A. |
 |
B. |
7 |
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C. |
41 |
D. |
77 |
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Hint |
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2. |
What is the slope of the line that passes through (8, 4) and (6, 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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Hint |
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3. |
Determine the value of r so that the line through (5, 2) and (7, r) has a slope of  . |
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A. |
6 |
B. |
3 |
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C. |
2 |
D. |
1 |
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Hint |
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4. |
Write the point-slope form of an equation of the line that passes through
(-2, 5) and has a slope of zero. |
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A. |
y = 5 |
B. |
x = -2 |
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C. |
y - 5 = x + 2 |
D. |
-2x + 5y = 0 |
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Hint |
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5. |
Write the point-slope form of an equation of the line that passes through (4, -3) and (2, 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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6. |
Write an equation in slope-intercept form of a line with a slope of  and a y-intercept of -2. |
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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. |
Which pair of lines graphed below are parallel? |
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A. |
k and m |
B. |
l and n |
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C. |
k and n |
D. |
l and m |
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Hint |
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8. |
Suppose y varies directly as x, and y = -319 when x = 29. Write a direct variation equation that relates x and y. |
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A. |
y = -11x |
B. |
y = 11x |
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C. |
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D. |
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Hint |
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9. |
Graph  |
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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. |
Write an equation of a line that passes through (-3, 4) with slope - . |
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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. |
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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Hint |
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12. |
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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Hint |
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13. |
What is implied when it is said that x and y have no correlation? |
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A. |
When the value of x increases, the value of y does not necessarily increase or decrease. |
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B. |
When the value of x decreases, the value of y decreases. |
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C. |
When the value of x increases, the value of y decreases. |
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D. |
When the value of x increases, the value of y increases. |
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Hint |
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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 height and the person's shoe size. |
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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 age, and the address of the person. |
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Hint |
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