1.
A line of best-fit should
not
be drawn for which of the following graphs.
A.
B.
C.
D.
Hint
2.
Use the scatter plot to predict the mileage of an engine with 250 horsepower.
A.
25
B.
12
C.
10
D.
20
Hint
3.
What is the slope of the line through the points
A
(-3, 4) and
B
(2, -1)?
A.
1
B.
-1
C.
D.
-3
Hint
4.
Find the equation that has direct variation.
A.
y
= 4
x
B.
y
= –3
x
– 1
C.
y
= 5
x
+ 1.3
D.
y
= 0.8
x
+ 9
Hint
5.
Find the graph that is nonlinear.
A.
B.
C.
D.
Hint
6.
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