1.
Determine which equation represents a function.
A.
x
=
y
2
- 1
B.
x
= 4
C.
D.
y
= -2
x
+ 1
Hint
2.
Which function is not linear?
A.
f
(
x
) = 2
x
3
B.
f
(
x
) = 8
C.
f
(
x
) = 14
x
+ 7
D.
Hint
3.
Find the
y
-intercept of the graph of 2
x
- 5
y
= 10.
A.
5
B.
0
C.
-2
D.
2
Hint
4.
Which equation is graphed below?
A.
x
+ 3
y
= 6
B.
x
- 3
y
= -6
C.
3
x
-
y
= -6
D.
3
x
+
y
= 6
Hint
5.
Consider the function
f
(
x
) = -2(
x
+ 8). Is this function a linear function? Why or why not?
A.
No,
f
is not a function.
B.
Yes, the function can be written in the form
f
(
x
) =
mx
+
b
.
C.
Yes, the coefficient of
x
is not zero.
D.
No, the function cannot be written in the form
f
(
x
) =
mx
+
b
.
Hint