Examview - Paper Preassessment Polynomial Unit Worksheet Page 12
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29 The graph below is a model of the polynomial: y = x
− 5x
+ 4. Is the graph a function?
____
What is the domain and range of the function?
A Yes, it is a function. Domain:
C Yes, it is a function. Domain:
Ï
¸
Ï
¸
Ô Ô
Ô Ô
Ô Ô
Ô Ô
} , Range y|y ∈ ℜ
} , Range y|y ≥ −2.25
{
x|x ∈ ℜ
{
x|x ∈ ℜ
Ì
˝
Ì
˝
Ô Ô
Ô Ô
Ô Ô
Ô Ô
Ó
˛
Ó
˛
B No, it is not a function. Domain:
D No, it is not a function. Domain:
Ï
¸
Ï
¸
Ô Ô
Ô Ô
Ô Ô
Ô Ô
{
}, Range y|y ≤ 4
{
}, Range y|y ≥ −2.25
x|x ∈ ℜ
x|x ∈ ℜ
Ì
˝
Ì
˝
Ô Ô
Ô Ô
Ô Ô
Ô Ô
Ó
˛
Ó
˛
Page 12
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