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1. |
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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2. |
Which equation is the slope-intercept form of the equation of the line that passes through (1, 2) and is parallel to 4x - 2y = 6? |
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A. |
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B. |
y = -2x + 1 |
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C. |
y = 4x + 3 |
D. |
y = 2x |
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Hint |
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3. |
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. |
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B. |
8y = - 6x |
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C. |
3x + 4y = -16 |
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D. |
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Hint |
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4. |
Which pair of lines graphed below are parallel? |
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A. |
k and m |
B. |
k and n |
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C. |
l and m |
D. |
l and n |
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Hint |
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5. |
Use the scatter plot to predict the mileage of an engine with 250 horsepower. |
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A. |
10 |
B. |
25 |
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C. |
12 |
D. |
20 |
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Hint |
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6. |
What is the slope of the line through the points A(-3, 4) and B(2, -1)? |
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A. |
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B. |
-1 |
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C. |
1 |
D. |
-3 |
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Hint |
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7. |
Determine the slope of the line containing the points P(-7, -8) and
Q(3, 0). |
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A. |
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B. |
-2 |
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C. |
2 |
D. |
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Hint |
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8. |
The graph of a linear function is _______. |
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A. |
a horizontal line only |
B. |
a straight line |
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C. |
None of these is correct |
D. |
a curved line |
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Hint |
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9. |
Find the equation that has direct variation. |
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A. |
y = 0.8x + 9 |
B. |
y = 4x |
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C. |
y = 5x + 1.3 |
D. |
y = –3x – 1 |
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Hint |
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10. |
Which characteristic describes a graph that is linear and has direct variation. |
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A. |
Variables x and y are not proportional. |
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B. |
The graph does not pass through (0, 0). |
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C. |
The equation has the form y = mx + b. |
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D. |
The equation has the form y = mx. |
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Hint |
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11. |
Find the equation that has direct variation. |
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A. |
y = –3x – 1 |
B. |
y = 0.8x + 9 |
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C. |
y = 5x + 1.3 |
D. |
y = 4x |
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Hint |
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12. |
Find the graph that does not have direct variation. |
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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. |
Find the equation that contains a decreasing linear relationship. |
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A. |
y = 4x – 3 |
B. |
y = 12+ 2x |
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C. |
y = 10 + x |
D. |
y = 5 – 6x |
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Hint |
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14. |
Find the graph that is nonlinear. |
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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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15. |
Find the table that represents a graph with direct variation. |
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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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16. |
Michael just got a job mowing his elderly neighbor's lawn paying him $10 each week. Draw a graph showing the amount he receives is increasing very rapidly. Suppose you graph the time in weeks on the horizontal axis and the amount Michael receives on the vertical axis. |
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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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17. |
Pam's mother gives Pam $20 each week for lunch to be bought at the school cafeteria. Lunches cost $4 per day. Draw a graph showing the amount Pam has left decreasing very slowly. Suppose you graph the time in days on the horizontal axis and the amount Pam has left on the vertical axis. |
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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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18. |
What is the equation of a line that has a slope of –1 and passes through (–2, 0)? |
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A. |
y = –x – 1 |
B. |
y = –x + 2 |
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C. |
y = –2x + 1 |
D. |
y = –x – 2 |
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Hint |
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19. |
Which line is parallel to the line listed below?
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A. |
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B. |
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C. |
y = 2x - 5 |
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D. |
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Hint |
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20. |
Which three points are collinear? |
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A. |
(1, 2), (–3, –2), (–2, –4) |
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B. |
(3, –1), (2, 5), (2, –3) |
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C. |
(–4, 4), (0, –4), (–1, –2) |
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D. |
(–5, 2), (1, 1), (4, 4) |
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Hint |
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