solve quadratics

To solve a quadratic by graphing is to find where the parabola crosses the x-axis. We call these the ___. Select all that apply.

• zeroes

• x-intercepts

• solutions

• roots

• 3

• 8

• -9

• -3

What are the solutions?

• 0 and 8
• -2 and -4
• 3 and -1
• 2 and 4

Find the zeros.

• 0 and 4
• 0 and -4
• 0
• -4

Solve for x.

(x - 7)² + 4 = 40

• x = -1, -13

• x = 1, 7

• x = -1, -7

• x = 1, 13

• x = -7, -13

• x=-3

  x=6

• x=3

  x=-6

• x=-9

  x=2

• x=9

  x=-2

What are the green dots called?

• axis of symmetry
• vertex
• parabola
• roots or x-intercepts

How many zeros does this parabola have? 

• 3
• 2
• 0
• 1