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1. |
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. |
2 |
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C. |
1 |
D. |
3 |
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Hint |
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2. |
Determine the slope of the line that passes through (2, 2) and (5, 8). |
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A. |
 |
B. |
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C. |
-2 |
D. |
2 |
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Hint |
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3. |
Write in standard form. |
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A. |
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B. |
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C. |
2x + 3y = -8 |
D. |
2x + 3y = 0 |
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Hint |
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4. |
Write the standard form of an equation of the line that passes through (-2, 5) and has an undefined slope. |
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A. |
-2x + 5y = 0 |
B. |
y = 5 |
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C. |
x = -2 |
D. |
x - y = 3 |
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Hint |
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5. |
What is implied when it is said that x and y have a negative correlation? |
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A. |
When the value of x increases, the value of y decreases. |
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B. |
When the value of x is negative, the value of y negative. |
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C. |
When the value of x increases, the value of y does not necessarily increase or decrease. |
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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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6. |
Which relationship would most likely have a positive correlation? |
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A. |
the amount of memory in computer, and the number of keys on the keyboard. |
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B. |
the number of miles driven, and the number of gallons of gas in the car. |
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C. |
the rate at which a train travels, and the time it takes for it to reach its destination. |
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D. |
the number of tickets sold for a baseball game, and the number of hotdogs sold at the game. |
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Hint |
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7. |
The equation V = -32t + 256 and the graph below describe the velocity V in feet per second of a ball t seconds after is is shot into the air. What is the ball's velocity after seven seconds? |
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A. |
32 ft/s |
B. |
256 ft/s |
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C. |
480 ft/s |
D. |
0 ft/s |
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Hint |
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8. |
Three out of the four equations listed below are equations of lines that are parallel to each other. Which equation does not have a graph that is a line parallel to the other three? |
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A. |
8y = - 6x |
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B. |
3x + 4y = -16 |
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C. |
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D. |
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Hint |
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9. |
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. |
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B. |
y = 11x |
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C. |
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D. |
y = -11x |
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Hint |
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10. |
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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C. |
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D. |
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Hint |
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11. |
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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Hint |
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12. |
Write an equation of a line that passes through (-12, -14) 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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13. |
A ticket service is selling tickets to a concert. An order of 4 tickets has a price of $63 and an order of 6 tickets has a price of $92. Write an equation to find the price of any amount of tickets. |
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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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14. |
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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