College Alg Unit 6 Test Review

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

• 2 solutions

• discriminant = 0

• 0 real solutions

• discriminant > 0

• 1 solution

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

• 36

• 13

• -20

• -11

Which value is the y-intercept?

• (-4, 0)

• (-1, -9)

• (0, -8)

• (2, 0)

What are the zeros of this graph?

• x = {-4, 2}

• (-4, 0 ) and (2, 0)

• x = {-1, 0}

• (-1, 9 ) and (0, -8)

Does this graph have a maximum or a minimum?

• maximum

• minimum

• I am not sure.

• neither

Does this graph have a maximum or a minimum?

• maximum

• minimum

• I am not sure.

• neither