Math 9 Quiz 1

Which of the following is a quadratric equation?

• 3m + 8 = 15

• x² - 5x + 10 = 0

• 12 – 4x = 0

• 25 - r = 4r

Tags

CCSS.HSA-REI.B.4B

Which of the following are a quadratic equationa?

• 2r² + 4r - 1

• 3t - 7 = 2

• s² + 5s - 4 = 0

• 2x² - 7x ≥ 3

A quadratic equation can be written in the form (a)   .

In the quadratic equation 3x² + 7x - 4 = 0, which is the quadratic term?

• x²

• 7x

• 3x²

• -4

In the equation 3x(x-2) = 10, what is the value of b?

• -2x

• -2

• -6x

• -6

Tags

CCSS.HSA-REI.B.4B

The method of solving the quadratic equation x² = k is called (a)   .

Tags

CCSS.HSA-REI.B.4B

How many solutions are there in the equation x² - 16 = 0?

• 1

• 2

• 3

• none

Tags

CCSS.HSA-REI.B.4B

Which equation has 2 and -2 as its solution set?

• x² + 4 = 0

• x² - 4 = 0

• x² = 8

• x² + 8 = 0

Tags

CCSS.HSA-REI.B.4B