Reviewing Quadratic Functions

Find the vertex of f(x)= -2x²-16x+3.

• (4, -93)
• (-4, 35)
• (-4,99)
• (8,3)

Find the axis of symmetry for
f(x) = x²- 8x + 15.

• x = -4
• x = 4
• y = 4
• y = -4

The parabola y = x² - 2x + 4 will

• open up

• open down

Identify the vertex and correct graph

• A

• B

• C

• D

Use the graph to determine the x-intercepts.

• -1 and -3
• 1 and -3
• 1 and 3
• -1 and 3

Which of the following equations matches standard form of a quadratic?

• ax + by = c
• y = a(x - h)² + k
• y = ax² + bx + c
• y = mx + b

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

• y = -2
• x = 3
• x = -3
• y = 2

Does the equation open up or down? 
Y = -3x² +7x - 2

• up
• down

Where is the axis of symmetry for this parabola?

• x = −1
• x = 0
• y = 3
• x = −3

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