| |
| |
1. |
State the slope and y-intercept of the graph of -y = -0.9x + 4. |
| |
|
A. |
m = -4, b = 0.9 |
B. |
m = -0.9, b = 4 |
| |
|
C. |
m = 0.9, b = -4 |
D. |
m = 4, b = -0.9 |
| |
|
Hint |
|
| |
2. |
Find the slope-intercept form of an equation of the line that has a slope of  and passes through (8,2). |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
3. |
What is the slope of the line with equation  |
| |
|
A. |
7 |
B. |
-7 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
4. |
Write the equation of the line through (5, -3) and (-2, -8) in slope-intercept form. |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
5. |
A phone company charges for service as follows: they charge a certain amount for a visit, and then they charge a certain amount per hour after that. If a three-hour service visit costs $220, and a job that takes an hour and a half costs $145, how much is the cost of a visit before the amount of time spent is factored in? |
| |
|
A. |
$25 |
B. |
$50 |
| |
|
C. |
$217 |
D. |
$70 |
| |
|
Hint |
|
|
|