1.
Which function is not linear?
A.
f
(
x
) = 14
x
+ 7
B.
C.
f
(
x
) = 8
D.
f
(
x
) = 2
x
3
Hint
2.
What is the
x
-intercept of the graph below?
A.
-2
B.
2
C.
3
D.
-3
Hint
3.
Find the
y
-intercept of the graph of 2
x
- 5
y
= 10.
A.
5
B.
-2
C.
0
D.
2
Hint
4.
Which equation is graphed below?
A.
3
x
-
y
= -6
B.
3
x
+
y
= 6
C.
x
+ 3
y
= 6
D.
x
- 3
y
= -6
Hint
5.
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.
33°F
B.
71.25°F
C.
111°F
D.
63°F
Hint