Quadratics Review

What are the zeros of the function in the graph?

• (-1, 0) and (1, 0)

• (0, -1) and (0, 1)

• (0, -1)

• (-1, 0) and (1, 0) and (0, -1)

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

Find the solutions to: 7(x-10)(3x+2)

• x = 10 and x = -2/3

• x = 10 and x = -2

• x = 1 and x = -2/3

Find the roots: 5x² + 31x + 6 = 0

• x = -1 and x = -6

• x = -1/5 and x = 6

• x = -1/5 and x = -6

Find the roots

• x = -1 x = 3

• x = -2 x = 3

• x = -1 x = 4

Find the solutions as an ordered pair.

• (3,0) (-4,0)

• (-3,0) (4,0)

• (-2,0) (4,0)

Find the zeros of this quadratic.

• b=4/5, b=3
• b=4, b=-3
• b=1/5, b=3
• b=4/5, b=-3

Solve by factoring!

• -2, 4

• -8

• ±8

• No real solution

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5
• x = 20 and x = -9
• x = 4 and x = 5
• x = -4 and x = 5

What is another word that describes the zeroes of a quadratic function?  

• y-intercepts
• vertex
• x-intercepts
• maximum