Examview - Paper Preassessment Polynomial Unit Worksheet Page 11
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27 Find the inverse of P(x) = 2(x − 4)
− 2. Determine if the inverse is a function.
____
1
−1
4
−1
4
(x) =
2x + 2
+ 4, yes it is a
(x) =
x + 1
+ 4, yes it is a
A P
C P
2
function.
function.
1
−1
4
−1
4
(x) =
2x + 2
+ 4, no it is not a
(x) =
x + 1
+ 4, no it is not
B P
D P
2
function.
a function.
28 Determine if the following is a function, then state the domain and range:
____
3
2
+ 2x
− 4x + 5.
y = x
A Yes, it is a function. Domain:
C No, it is not a function. Domain:
Ï
¸
Ï
¸
Ô Ô
Ô Ô
Ô Ô
Ô Ô
{
}, Range y|y ∈ ℜ
{
}, Range y|y ∈ ℜ
x|x ∈ ℜ
x|x ∈ ℜ
Ì
˝
Ì
˝
Ô Ô
Ô Ô
Ô Ô
Ô Ô
Ó
˛
Ó
˛
B Yes, it is a function. Domain:
D No, it is not a function. Domain:
Ï
¸
Ï
¸
Ô Ô
Ô Ô
Ô Ô
Ô Ô
}, Range y|y ≥ 5
}, Range y|y ≥ 5
{
{
x|x ∈ ℜ
Ì
˝
x|x ∈ ℜ
Ì
˝
Ô Ô
Ô Ô
Ô Ô
Ô Ô
Ó
˛
Ó
˛
Page 11
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