1.
Determine the slope of the line that passes through (2, 2) and (5, 8).
A.
B.
2
C.
-2
D.
Hint
2.
The graph of a linear function is _______.
A.
a curved line
B.
None of these is correct
C.
a straight line
D.
a horizontal line only
Hint
3.
Find the equation that has direct variation.
A.
y
= 4
x
B.
y
= –3
x
– 1
C.
y
= 0.8
x
+ 9
D.
y
= 5
x
+ 1.3
Hint
4.
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.
A.
B.
C.
D.
Hint
5.
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
6.
What is the equation of a line that has a slope of 4 and passes through (6, 3)?
A.
y
= 4
x
– 27
B.
y
= 4
x
– 21
C.
y
= 4
x
– 3
D.
y
= 4
x
– 7
Hint