Quadratic Functions: Factored Form

Question 1

What is the y-intercept of the quadratic functionf(x) = (x – 8)(x + 3)?

Revolt · Accepted Answer

(0,–24)

Question 2

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

Revolt · Accepted Answer

The function is increasing for all real values of x where x < –4.

Question 3

What is the equation of the quadratic function with a vertex at (2,–25) and an x-intercept at (7,0)?

Revolt · Accepted Answer

f(x) = (x + 3)(x – 7)

Question 4

Which statements about the function are true? Select two options.

Question 5

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

Question 6

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

Revolt · Accepted Answer

(0,12)

Question 7

Which function has two x-intercepts, one at (0, 0) and one at (4, 0)?

Revolt · Accepted Answer

f(x) = x(x − 4)

Question 8

The graph of the function f(x) = (x – 4)(x + 1) is shown below.

Revolt · Accepted Answer

The function is decreasing for all real values of x wherex < 1.5.

Question 9

What is the midpoint of the x-intercepts off(x) = (x – 2)(x – 4)?

Revolt · Accepted Answer

(3,0)

Question 10

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

Revolt · Accepted Answer

The domain is all real numbers, and the range is all real numbers greater than or equal to –4.

Quadratic Functions: Factored Form Answers