1.
Evaluate
a
-
b
2
if
a
= 4 and
b
= 3.
A.
-13
B.
-5
C.
1
D.
13
Hint
2.
Which function is not linear?
A.
f
(
x
) = 2
x
3
B.
C.
f
(
x
) = 14
x
+ 7
D.
f
(
x
) = 8
Hint
3.
What is the
x
-intercept of the graph below?
A.
-2
B.
-3
C.
3
D.
2
Hint
4.
The temperature
f
(
x
) of water in a lake in degrees Fahrenheit is estimated by the function shown below, where
x
is the depth in feet of the water. What would be the temperature of water 30 feet below the surface?
A.
63°F
B.
111°F
C.
33°F
D.
71.25°F
Hint
5.
Describe the line that is graphed below.
A.
passes through the point (3,-2) with a slope of
B.
passes through the point (3,-2) with a slope of
C.
passes through the point (3,2) with a slope of
D.
passes through the point (3,-2) with a slope of
Hint
6.
Graph the line through (2, 3) that is perpendicular to the line with equation 2
x
+ 5
y
= 1.
A.
B.
C.
D.
Hint
7.
Choose the line that has a slope of zero.
A.
B.
C.
D.
Hint
8.
What is the
y
-intercept of the graph of the line with equation
A.
B.
7
C.
D.
-7
Hint
9.
COOKING
Mario put a pot of water onto the stove and applied steady heat to cook potatoes. After 3 minutes, the temperature of the water was 76°F. After 7 minutes, the temperature was 164°F. Find the rate of change in the temperature of the water during this time period.
A.
16°F per minute
B.
18°F per minute
C.
22°F per minute
D.
26°F per minute
Hint
10.
Identify the type of graph represented by the following graph.
A.
quadratic
B.
not a function
C.
linear
D.
absolute value
Hint