Quadratic Equations

• No Solution

• A

• B

• C

• D

How many solutions can a quadratic equation have? Select all that apply.

• 0

• 1

• 2

• As many as you want

• (x-3)(5x+ 2)

• (x+3)(5x+ 2)

• (x-3)(x +2)

• (x+3)(x+2)

What are the roots of (2x - 7)(x +6)?

• {7, -6}

• {-7/2, -6}

• {7/2, -6}

• {7, -6}

What does the discriminant determine?

• Whether the graph goes up or down

• The vertex

• The number of Solutions

• The y-intercept

What is the discriminant in the Quadratic Formula?

• -b + 4ac

• b - 4ac

• -b² - 4ac

• b² - 4ac

Match the following

• discriminant < 0

• 0 real solutions

• discriminant = 0

• 1 solution

• discriminant > 0

• 2 solutions

Find the discriminant: 3k² + k - 1 = 0

• 36

• 13

• -20

• -11

Put your knowledge to the test with this SAT practice question!

• y = (x + 3)(x − 5)

• y = (x − 3)(x + 5)

• y = x(x − 2) − 15

• y = (x − 1)^2 − 16