Graphs of Quadratic Functions

• A
• B
• C
• D

• A
• B
• C
• D

• A
• B
• C
• D

Which is the correct graph of the function:

• 
• 
• 
• 

What is the axis of symmetry?

• the slope of the graph

• the dividing line for a parabola

• a way to spin my pencil

• the x-axis

Find the axis of symmetry for f(x) = x² + 4x - 5 

• x = 2

• x = -2

• x = 4

• x = -4

What is the axis of symmetry for the following equation?
y=4x²-8x+9

• x=-8

• x=1

• x=-1

• x=2

What is the vertex of y=x²+4x+3?

• (2,1)

• (-2,1)

• (0,0)

• (-2,-1)

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

• y = -2

• x = 3

• x = -3

• y = 2

A half-pipe at a skate park is approxiamtely parabolic in shape.  It can be modeled by the quadratic function y = x² - 6x + 9.  At what point would a skater be at the lowest part of the ramp? 

• (-3, 36)

• (36, -3)

• (3, 0)

• (0, 3)