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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. |
7 |
B. |
77 |
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C. |
41 |
D. |
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Hint |
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2. |
Write the point-slope form of an equation of the line that contains  , which is the hypotenuse of the right triangle. |
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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. |
A line of best-fit should not be drawn for which of the following graphs. |
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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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4. |
Write the standard form of the equation of the line that passes through
(-2, -3) and (2, -5). |
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A. |
x + 2y = -8 |
B. |
x - 2y = -8 |
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C. |
2x + y = -7 |
D. |
2x - y = -1 |
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Hint |
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5. |
Choose the slope-intercept form of the equation of the line that passes through (-2, 4) and is perpendicular to the graph of 2x + y = -20. |
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A. |
y = -2x |
B. |
y = 2x + 8 |
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C. |
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D. |
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Hint |
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6. |
Find the slope of the line that passes through (-2, 9.5) and (4, 5). |
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A. |
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B. |
0 |
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C. |
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D. |
undefined |
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Hint |
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7. |
Use the direct variation equation y = 22x to find x when y = 88. |
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A. |
x = -4 |
B. |
x = 4 |
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C. |
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D. |
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Hint |
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8. |
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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9. |
Write an equation of the line whose slope is  and whose y-intercept is 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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10. |
Which equation describes the line that contains the points (6, 2) and (12, 4)? |
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A. |
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B. |
y = -3x |
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C. |
y = 3x |
D. |
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Hint |
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11. |
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 = 80x – 165 |
B. |
y = 20x + 15 |
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C. |
y = 80x |
D. |
y = 20x |
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Hint |
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12. |
Write the slope-intercept form of an equation for the line that passes through (-4, -26) and is parallel to  |
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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. |
Which relationship would most likely have no correlation? |
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A. |
A person's height and the person's shoe size. |
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B. |
The number of pizzas ordered, and the total price of the bill. |
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C. |
The number of miles driven, and the number of gallons of gas in the car. |
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D. |
A person's age, and the address of the person. |
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Hint |
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14. |
Which of the following pairs of coordinates are on a line with an undefined slope? |
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A. |
(3, -2), (3, 5) |
B. |
(-2, -2), (4, 4) |
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C. |
(2, 1), (5, -2) |
D. |
(-4, -3), (3, -3) |
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Hint |
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