Quadratic Equations

What is the name of this form of a quadratic equation:

• vertex form

• standard form

• factored form

• zero form

What is the y-intercept of this parabola?

• (−1, 3)

• (5, 0)

• (−2, 5)

• (0, 5)

Tags

CCSS.HSF-IF.C.7A

What is the vertex of this parabola?

• (−1, 3)

• (−3, 11)

• (−2, 5)

• (0, 5)

Which of the following is a quadratic equation in standard form?

• 3x + 2y = 7

• y = -(x - 4)² + 8

• y = -2x² + 3x + 1

• y = 4x + 9

The quadratic function y = -2x² + 4x + 6 is pictured. What are the solutions to the equation 7.5 = -2x² + 4x + 6?

• x = 0.5

• x = 1.5

• x = 1

• x = 8

• x = 6

What are the solutions to the quadratic equation?

• x = -4

• x = 1

• x = -1

• x = 2

• x = 4

Solve the polynomial.

x² - 6x - 7 = 0

• x = -1, 7

• x = -3, -1

• x = 5, 6

• x = -3, 3

Tags

CCSS.HSA-REI.B.4B

Solutions of a quadratic equation are also called

• roots

• x-intercepts

• zeros

• All of the above

Solve the polynomial.

x² - 6x - 7 = 0

• x = -1, 7

• x = -3, -1

• x = 5, 6

• x = -3, 3

Tags

CCSS.HSA-REI.B.4B

Select the solutions to the equation

4x² + 11x + 7 = 0

• x = - 1.75

• x = 6

• x = - 1

• x = 1