Quadratics

What is the "formula" for finding the axis of symmetry? 

Use the graph to determine the solutions.

• -1 and -3

• 1 and -3

• 1 and 3

• -1 and 3

1 The discriminant is

• aX² + bX + c

• b - 4ac

• b² - 4ac

• b² + 4ac

A function has a discriminant of 4.

How many real solutions does it have?

• 0

• 1

• 2

• 4

3 For the function above, is the discriminant positive, negative, or zero?

• Positive

• Negative

• Zero

Find the Vertex:
f(x) = -2x² + 4x -1

• (1,1)
• (-2,4)
• (-1,-2)
• No Real Solution

What is the quadratic in factored form?

y=2x²+11x+5

• y=(x+2)(2x+5)

• y=(2x+1)(x+5)

• y=(x+2)(2x+5)

• y=(x-5)((2x-1)

A quadratic has the solutions -2 and 8. What is the equation in factored form?

• y=(2x+8)(x-1)

• y=(2x-8)(x+1)

• y=(x+2)(x-8)

• y=(x-2)(x+8)