Quadratic Functions: Factored Form

Question 1

Which point is an x-intercept of the quadratic function f(x) = (x – 4)(x + 2)?

Revolt · Accepted Answer

(–2, 0)

Question 2

minimum value✔ maximum valuey-intercept

Revolt · Accepted Answer

✔ maximum value; The vertex is the .: maximum value; The function is positive .: for no values of x; The function is decreasing .: when x > –1; The domain of the function is .: all real numbers; The range of the function is .: all numbers less than or equal to 0

Question 3

Graph the function f(x) = (x + 1)(x – 5). Use the drop-down menus to complete the steps needed to graph the function.

Revolt · Accepted Answer

Find the vertex:: (2, –9); Find the y-intercept:: (0, –5)

Question 4

when x –1for all real numbers of x✔ for no values of x

Revolt · Accepted Answer

✔ for no values of x

Question 5

when x –1for all real numbers of xfor no values of x

Revolt · Accepted Answer

✔ when x > –1

Question 6

✔ all real numbersall real numbers less than –1all negative real numbersall positive real numbers

Revolt · Accepted Answer

✔ all real numbers

Question 7

all real numbersall real numbers less than –1✔ all numbers less than or equal to 0all numbers greater than or equal to 0

Revolt · Accepted Answer

✔ all numbers less than or equal to 0

Question 8

(0, –9)✔ (0, –5)(0, 4)(0, 5)

Revolt · Accepted Answer

✔ (0, –5)

Question 9

(1, –8)✔ (2, –9)(2, –5)(3, –4)

Revolt · Accepted Answer

✔ (2, –9); Find the vertex:: (2, –9); Find the y-intercept:: (0, –5)

Question 10

What is the vertex of the quadratic function f(x) = (x – 8)(x – 2)?

Revolt · Accepted Answer

5; -9

Quadratic Functions: Factored Form Answers

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