Quadratic Functions Pre-Assessment

Identify the intervals of increasing.

• (- ∞, - 3)

• (-3, ∞)

The solutions of the quadratic equation

x²+2x-15=0 are...

• x = 3 or x = 5

• x = 5 or x = -3

• x = -5 or x = 3

• x = -3 or x = -5

• F

• G

• H

• J

Answer explanation

• F

• G

• H

• J

What are the solutions?

(x+3)² - 6 = 115

• 11 and -19

• 16 and -2

• 3 and -21

• 8 and -14

• 14 and -24

• 4 and 6

• 4 and -6

• -4 and -6

• -4 and 6

Use the graph to determine the solutions.

• x= -2 and x= -3

• x= 2 and x= 3

• x= -2 and x= 3

• x= 2 and x= -3

The zeros or roots of the quadratic function described by the graph are:

The quadratic function f\left(x\right)=x^2+2x-1 is expressed in vertex form as:

• 3 units downward

• 3 units upward

• 3 units to the right

• 3 units to the left