Quadratics Vocabulary Extra Practice

What is the y-intercept?

• (-1,8)

• (8,-1)

• (0,6)

• (6,0)

Which method is most efficient to solve:
x²  -  6x + 2 = 0

• Square Roots

• Factoring

• Completing the Square

• Quadratic Formula

Which method is most efficient to solve:
x²  -  11x + 10 = 0

• Square Roots

• Factoring

• Completing the Square

• Quadratic Formula

Which method is most efficient to solve:
.02x²  -  .5x + 3 = 0

• Square Roots

• Factoring

• Completing the Square

• Quadratic Formula

What are the roots?
2x² + 2x - 12 = 0

• x = 3 ; x = -3

• x = 12 ; x =  -12

• x = -3 ; x = 2

• x = -2 ; x = 2

What are the zeros of the function?
f(x) = x² + x - 20

• x = 5 ; x = -4

• x = -20 ; x = 0

• x = -5 ; x = 4

• x = 20; x = 0

Next step in completing the square?
3x² + 18x - 6 = 0
1: 3x² + 18x  = 6
2: 3(x² + 6x) = 6
3: ?

• 3(x² + 6x + 9) = 6 + 9

• 3(x² + 6x + 36) = 6 + 36

• (x² + 6x) = 9

• 3(x² + 6x + 9) = 6 + 27

Which quadratic is being solved in the formula?

• 2x² - 5x + 3

• 2x² + 5x + 3

• 3x² - 5x + 2

• 2x² - 5x - 3

Which method is most efficient to solve:
8x²  -  5x  = 0

• Square Roots

• Factoring

• Completing the Square

• Quadratic Formula

What are the x-intercepts?
x² + 6x - 3 = f(x)