1.
When Kristin works 8 hours, she earns $60. When she works 20 hours, she earns $150. Write a linear equation that describes her earnings. Assume that the changes increase linearly.
A.
B.
C.
D.
Hint
2.
Write an equation of the line that passes through (10,-4) and is perpendicular to the line whose equation is
A.
B.
C.
D.
Hint
3.
Write the equation of the line through (5, -3) and (-2, -8) in slope-intercept form.
A.
B.
C.
D.
Hint
4.
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.
$50
B.
$25
C.
$217
D.
$70
Hint
5.
Write an equation in slope-intercept form for the line that has a slope of 2 and passes through (-4, -6).
A.
y
= 2
x
- 8
B.
y
= 2
x
+ 2
C.
y
= 2
x
- 2
D.
y
= 2
x
+ 8
Hint