Quadratic Functions: Factored Form Answers
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What is the axis of symmetry of the function f(x)=−(x+9)(x−21)?
A
x=−15B
x=−6C
x=6D
x=153
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Which is the graph of f(x) = (x – 1)(x + 4)?
A
OptionB
OptionC
OptionD
Option4
The graph of the function f(x) = (x + 2)(x + 6) is shown below.
A
The function is positive for all real values of x wherex > –4.B
The function is negative for all real values of x where–6 < x < –2.C
The function is positive for all real values of x wherex –3.D
The function is negative for all real values of x wherex < –2.5
The graph of the function f(x) = (x − 3)(x + 1) is shown.
A
all real values of x where x < −1B
all real values of x where x < 1C
all real values of x where 1 < x < 3D
all real values of x where x > 36
Which function has two x-intercepts, one at (0, 0) and one at (4, 0)?
A
f(x) = x(x − 4)B
f(x) = x(x + 4)C
f(x) = (x − 4)(x − 4)D
f(x) = (x + 4)(x + 4)7
Which statements about the function are true? Select two options.
A
The vertex of the function is at (1,–25).B
The vertex of the function is at (1,–24).C
The graph is increasing only on the interval −4< x < 6.D
The graph is positive only on one interval, where x < –4.E
The graph is negative on the entire interval–4 < x < 6.8
What is the midpoint of the x-intercepts off(x) = (x – 2)(x – 4)?
A
(–3,0)B
(–1,0)C
(1,0)D
(3,0)9
Which point is an x-intercept of the quadratic function f(x) = (x + 6)(x – 3)?
A
(0,6)B
(0,–6)C
(6,0)D
(–6,0)10
What is the y-intercept of the quadratic functionf(x) = (x – 6)(x – 2)?
A
(0,–6)B
(0,12)C
(–8,0)D
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