Solving Quadratics Graphically

What are the green dots called?

• axis of symmetry

• vertex

• parabola

• roots or x-intercepts

What are the solutions?

• -2, 1

• 1, 2

• -1,2

• 0,-4

What is the equation for axis of symmetry?

• y=3

• x=3

• x=5

• x=1

What is the axis of symmetry of:y=2x²-4x+9

• x = 1

• x = -1

• x = -2

• x = 4

• A

• B

• C

• D

• (-4, 0) and (2, 0)

• (-2, 0) and (4, 0)

• (0, -4) and (0, 2)

• (1, 0) and (-8, 0)

• A.
• B.
• C.
• D.

Solve the equation by graphing.
 -x² + 12x - 36 = 0

• 6

• 3

• 4

• no solution

• (2, 0) and (4, 0)

• (1, 0) and (8, 0)

• (0, 2) and (0, 4)

• (3, 0) and (5, 0)

Solve by graphing: x² - 9x + 20 = 0

• x = -4 and x = -5

• x = 20 and x = -9

• x = 4 and x = 5

• x = -4 and x = 5