1.
Determine which equation represents a function.
A.
B.
x
=
y
2
- 1
C.
y
= -2
x
+ 1
D.
x
= 4
Hint
2.
Which function is not linear?
A.
f
(
x
) = 2
x
3
B.
f
(
x
) = 14
x
+ 7
C.
f
(
x
) = 8
D.
Hint
3.
What is the
x
-intercept of the graph below?
A.
-2
B.
3
C.
2
D.
-3
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.
Given
find
A.
7
B.
1
C.
–7
D.
–1
Hint