Intro to Vertex Form Quadratics

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

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

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

Given the equation for this parabola:
 y = -(x-4)² - 3,
does this parabola have a maximum or minimum value?

• Maximum
• Minimum

What is the green dot on the parabola called?

• maximum
• minumum
• roots
• zeros

What is the green dashed line called?

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

What is the vertex of the graph?

• (2,4)
• (-2,-4)
• (4,2)
• (-4,-2)

A parabola has a vertex at (-3,2). Where is the axis of symmetry?

• y = -2
• x = 3
• x = -3
• y = 2

How will the parabola look?

• wide and open upward

• wide and open downward

• narrow and open upward

• narrow and open downward

How will the parabola look?

• wide and open upward

• narrow and open upward

• wide and open downward

• narrow and open downward

Which equation has a vertex of (-3, 4)?

• y = 2(x+3)² + 4
• y = (x+3)² - 4
• y = (x-3)² + 4
• y = 2(x - 3)² + 4