1.
Which function is not linear?
A.
f
(
x
) = 8
B.
f
(
x
) = 14
x
+ 7
C.
f
(
x
) = 2
x
3
D.
Hint
2.
Find the
y
-intercept of the graph of 2
x
- 5
y
= 10.
A.
2
B.
0
C.
-2
D.
5
Hint
3.
Which equation is graphed below?
A.
x
- 3
y
= -6
B.
3
x
+
y
= 6
C.
x
+ 3
y
= 6
D.
3
x
-
y
= -6
Hint
4.
Consider the function
f
(
x
) = -2(
x
+ 8). Is this function a linear function? Why or why not?
A.
Yes, the function can be written in the form
f
(
x
) =
mx
+
b
.
B.
No, the function cannot be written in the form
f
(
x
) =
mx
+
b
.
C.
Yes, the coefficient of
x
is not zero.
D.
No,
f
is not a function.
Hint
5.
Consider the formula
F
(
c
) = 1.8
c
+ 32, where
c
is the temperature in degrees Celsius and
F
(
c
) is the temperature in degrees Fahrenheit. If it is 0°
C
at the beginning of the day, and it is 11° C at noon, what was the change in temperature in degrees Fahrenheit?
A.
11
B.
51.8
C.
-12.2
D.
19.8
Hint