Quadratic Functions

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

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

• y = -2

• x = 3

• x = -3

• y = 2

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

• x = -4

• x = 4

• y = 4

• y = -4

What is the initial (starting) height of an object following this path?  h(t) = -16t² +20t + 6

• -16 feet 

• 0 feet

• 20 feet 

• 6 feet 

An object in launched directly upward at 64 feet per second (ft/s) from a platform 80 feet high. Its height is represented by the equation 
s(t) = –16t² + 64t + 80.
What will be the object's maximum height? 

• 2 ft

• 80 ft

• 144 ft

• 64 ft

h(t) = -16t² + 20t +6, what is the height after 1 second?

• 6 feet 

• 20 feet 

• 10 feet 

• 4 feet 

Find the vertex. y = x² -2x - 4

• V(4, -2)

• V(-2, 4)

• V(1, -9)

• V(-9, -1)

Find the vertex  y = x² - 2x - 5

• V(-2, 10)

• V(-1, 15)

• V(1, -6)

• V(1, -12)

What type of function does this table represent?

• Linear Function

• Exponential Function

• Quadratic Function

• Not a Function

• Linear Function

• Quadratic Function

• Exponential function

• Not a Function