Lesson 8-2 Quadratic Functions in Vertex Form

How can you tell the direction of the opening of the graph of a parabola 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

Tags

CCSS.HSF-IF.C.7A

Does the graph of
-2(x + 5) + 2
have a minimum or a maximum?

• Minimum
• Maximum
• It has neither.
• It has both.

Tags

CCSS.HSF-IF.C.7A

The solutions of a quadratic equation are known as the _____. Choose 3.

• X-intercepts

• Roots

• Squares

• Zeros

Given the equation for this parabola:

y = -(x - 4)² - 3,

does this parabola have a maximum or minimum value?

• Maximum

• Minimum

Find the y-intercept of

f(x) = 2x² - 2x + 1

• 2

• -2

• 1

• -1

What are the green dots called? Choose 3.

• axis of symmetry

• zeros

• solutions

• roots or x-intercepts

What piece of information does c identify in the following equation?

y=ax² + bx + c

• Zeros

• Axis of Symmetry

• Direction

• y-intercept

What is the green dot on the parabola called? Choose 2.

• maximum

• minumum

• vertex

• zeros

What is the green dashed line called?

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

Tags

CCSS.HSF-IF.C.7A

What is the vertex of the graph?

• (2, 4)

• (-2, -4)

• (4, 2)

• (-4, -2)