| |
| |
1. |
Determine the slope of the line that passes through (2, 2) and (5, 8). |
| |
|
A. |
 |
B. |
2 |
| |
|
C. |
-2 |
D. |
 |
| |
|
Hint |
|
| |
2. |
What is the slope of  in parallelogram ABCD? |
| |
|
 |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
3. |
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? |
| |
|
A. |
 |
B. |
y = -2x + 1 |
| |
|
C. |
y = 2x |
D. |
y = 4x + 3 |
| |
|
Hint |
|
| |
4. |
Which pair of lines graphed below are parallel? |
| |
|
 |
| |
|
A. |
k and n |
B. |
l and m |
| |
|
C. |
k and m |
D. |
l and n |
| |
|
Hint |
|
| |
5. |
The table shows the possible lengths and widths of a rectangle that has an area of 72 square centimeters. Make a scatter plot of the data. |
| |
|
 |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
6. |
Use the scatter plot to predict the mileage of an engine with 250 horsepower. |
| |
|
 |
| |
|
A. |
25 |
B. |
12 |
| |
|
C. |
20 |
D. |
10 |
| |
|
Hint |
|
| |
7. |
Determine the slope of the line containing the points P(-7, -8) and
Q(3, 0). |
| |
|
A. |
2 |
B. |
 |
| |
|
C. |
-2 |
D. |
 |
| |
|
Hint |
|
| |
8. |
The graph of a linear function is _______. |
| |
|
A. |
a straight line |
B. |
None of these is correct |
| |
|
C. |
a curved line |
D. |
a horizontal line only |
| |
|
Hint |
|
| |
9. |
Find the equation that has direct variation. |
| |
|
A. |
y = 4x |
B. |
y = –3x – 1 |
| |
|
C. |
y = 0.8x + 9 |
D. |
y = 5x + 1.3 |
| |
|
Hint |
|
| |
10. |
Find the graph that does not have direct variation. |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
11. |
Find the equation that contains a decreasing linear relationship. |
| |
|
A. |
y = 10 + x |
B. |
y = 5 – 6x |
| |
|
C. |
y = 12+ 2x |
D. |
y = 4x – 3 |
| |
|
Hint |
|
| |
12. |
Find the situation that involves a decreasing linear relationship and has direct variation. |
| |
|
A. |
The temperature that begins at 0°F at 6:00 a.m. rises 3°F every hour for 6 hours. |
| |
|
B. |
A bucket that begins at ground level and is lowered into a well at a rate of 1 foot per second. |
| |
|
C. |
An airplane that begins at 20,000 feet and descends for a landing on the ground at the airport. |
| |
|
D. |
A submarine that begins at the bottom of the ocean and is raised to the surface of the water at 15 meters per second. |
| |
|
Hint |
|
| |
13. |
Find the equation that is nonlinear. |
| |
|
A. |
y = 14 + 6x |
B. |
y = –3x – 1 |
| |
|
C. |
y = 8 – x |
D. |
y = 4y2 |
| |
|
Hint |
|
| |
14. |
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. |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
15. |
What is the equation of a line that has a slope of 4 and passes through (6, 3)? |
| |
|
A. |
y = 4x – 7 |
B. |
y = 4x – 27 |
| |
|
C. |
y = 4x – 21 |
D. |
y = 4x – 3 |
| |
|
Hint |
|
| |
16. |
What is the equation of a line that has a slope of 3 and passes through (–4, –3)? |
| |
|
A. |
y = 3x + 3 |
B. |
y = 3x – 3 |
| |
|
C. |
y = 3x + 9 |
D. |
y = 3x – 9 |
| |
|
Hint |
|
| |
17. |
Which line is parallel to the line listed below?
 |
| |
|
A. |
y = 2x - 5 |
| |
|
B. |
 |
| |
|
C. |
 |
| |
|
D. |
 |
| |
|
Hint |
|
| |
18. |
Which three points are collinear? |
| |
|
A. |
(3, 1), (4, 0), (–1, 2) |
| |
|
B. |
(–1, 1), (2, 3), (5, 2) |
| |
|
C. |
(–5, –3), (–2, 3), (2, –4) |
| |
|
D. |
(4, –3), (2, –2), (–4, 1) |
| |
|
Hint |
|
| |
19. |
Which three points are collinear? |
| |
|
A. |
(3, –1), (2, 5), (2, –3) |
| |
|
B. |
(1, 2), (–3, –2), (–2, –4) |
| |
|
C. |
(–4, 4), (0, –4), (–1, –2) |
| |
|
D. |
(–5, 2), (1, 1), (4, 4) |
| |
|
Hint |
|
| |
20. |
Write the equation in slope-intercept form.
–6x = –10 – 2y |
| |
|
A. |
y = 3x + 8 |
| |
|
B. |
y = 3x – 5 |
| |
|
C. |
y + 8 = 3(x + 1) |
| |
|
D. |
–6x + 2y + 10 = 0 |
| |
|
Hint |
|
|
|