Solve a Quadratic by Graphing

How many zeros does this parabola have? 

• 3

• 2

• 0

• 1

What are the solutions?

• -2, 1

• 1, 2

• -1,2

• 0,-4

What is the solution of the function shown?

• (-1, 4)

• (-3, 12)

• No solutions

• (-3, 4)

Use the table to find 2 solutions to the quadratic.

(Choose all that apply)

• 0

• -5

• -1

• 2

• 5

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

• 6

• 3

• 4

• no solution

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

Solve by graphing: x² + 3x - 18 = 0

• x = -3 and x = 6

• x = 3 and x = -6

• x = -9 and x = 2

• x = 9 and x = -2

• -5 and 5

• 5

• -5

• No real solution

Answer explanation

The quadratic equation can be factored as (x-3)(x-3) = 0, which simplifies to (x-3)^2 = 0. Therefore, x = 3 is the only solution.

• (-3,0) and (6,0)

• (-1.5,0) and (2,0)

• (-3,0) and (3,0)

• (-.5,0) and (6,0)