QUIZIZZ Review for Chapter 9 Test on Quadratics

What is the vertex of this parabola?

• (−1, 3)

• (−3, 11)

• (−2, 5)

• (0, 5)

What is the y-intercept of this parabola?

• (−1, 3)

• (−3, 11)

• (−2, 5)

• (0, 5)

Where is the axis of symmetry for this parabola?

• x = −1

• x = 0

• y = 3

• x = −3

What is the formula above primarily used for?

• Finding the axis of symmetry from standard form

• Finding the vertex from standard form

• Finding the vertex from vertex form

• Finding the vertex from standard form

What are the zeros of the parabola? 

• 1, 5

• 3, -5 

• 3, 0

• -6, 1

What is the equation for axis of symmetry?

• y = 3

• x = 3

• x = 5

• x = 1

What are the green dots called?

• axis of symmetry

• vertex

• parabola

• roots or x-intercepts

How can you tell whether a parabola opens up or opens down by looking at the equation?

• The vertex tells you the direction of the opening

• The value of "a" tells you the direction of the opening.

• All parabolas open upward

• All parabolas open downward

What is the equation for this parabola in factored form?

• y=(x+2)(x-1)

• y=(x-2)(x+1)

• y=(x-2)(x-1)

• y=(x+2)(x+1)

Graph x² - x - 6 in Desmos. Find the zeros (x-intercept).

• 3

• 2

• -6

• -3

• -2