Quadratic Function Practice

What do we call the highest or lowest point of a quadratic?

• parabola
• vertex
• graph
• point

Which equation below is a quadratic?

• y= 9x + 5

• y= 3x² - 6

• y= 5x³ + 6

• x= 3^x

What is the vertex?

• (2, 4)
• (3, -1)
• (0, 8)
• (4, 2)

Evaluate f(x) = x² for f(-8). Show work.

• 64

• -64

• -16

• 16

What are the zeros or x- intercepts of the graph?

• (0, -1) and (0, 3)

• (-1, 0) and (3, 0)

• (0, 2)

• (2, 0)

What is the equation for the axis of symmetry?

• y=3

• x=3

• x=5

• x=1

A parabola has a vertex at (-3,2).

What is the equation of the axis of symmetry?

• y = -2

• x = 3

• x = -3

• y = 2

What are a, b, and c in 3x² + 5x - 4?

• a = 3, b = 5, c = -4

• a = 3, b = 5, c = 4

• a = -3, b = -5, c = -4

• a = 3, b = -5, c = -4

What do the "Zeros" represent on a quadratic equation graph?

• x-intercepts

• y-intercepts

• vertex

• focus

solve using square roots

• ±81

• ±9

• ±3

• No real solution