Quadratic Functions: Factored Form Answers

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1
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Which is the graph of f(x) = –(x + 3)(x + 1)?

A
Option
B
Option
C
Option
D
Option
2
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Which function has only one x-intercept at (−6, 0)?

A
f(x) = x(x − 6)
B
f(x) = (x − 6)(x − 6)
C
f(x) = (x + 6)(x − 6)
D
f(x) = (x + 6)(x + 6)
3

What is the y-intercept of the quadratic functionf(x) = (x – 6)(x – 2)?

A
(0,–6)
B
(0,12)
C
(–8,0)
D
(2,0)
4

The graph of the function f(x) = –(x + 6)(x + 2) is shown below.

Question illustration
A
The function is increasing for all real values of x where x < –4.
B
The function is increasing for all real values of x where–6 < x < –2.
C
The function is decreasing for all real values of x where x –2.
D
The function is decreasing for all real values of x wherex < –4.

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