Key Points Quadratic

What is the vertex?

• (-3, 0)

• (3, 0)

• (0, 18)

• (18, 0)

What is the equation of the axis of symmetry?

• y = 0

• x = 0

• x = 3

• x = -3

Which of the statements about the graph is FALSE?

• The vertex is a maximum

• There are two zeros at x = -3 and x = 3

• The y-intercept is (0, 18)

• The range is [18, inf)

What is the significance of the ordered pair (0, -2) to the graph?

• It is the vertex

• It is an x-intercept

• It is the y-intercept

• It is the axis of symmetry

What is the significance of the ordered pair (2, -4) to the graph?

• It is the vertex

• It is an x-intercept

• It is the y-intercept

• It is the axis of symmetry

Determine the domain and range of the function

• Domain: (-inf, inf), Range: (-inf, inf)

• Domain: [-4, inf), Range: (-inf, inf)

• Domain: (-inf, inf), Range: [-4, inf)

• Domain: (-1, -5), Range: [-4, inf)

What are the x-intercepts of the function? Choose all that apply.

• x = 0

• x = -3

• x = -6

• y = 18

Which statement about the graph is FALSE?

• The vertex is (-3, 18)

• The vertex is a maximum

• The y-intercept is y = 0

• The axis of symmetry is y = -3

Which statement about the graph is FALSE?

• The vertex is also an x-intercept of the function

• The y-intercept is (0, -2)

• The axis of symmetry is x = 2

• The range is [0, inf)

What is the significance of the ordered pair (1, -2) to the graph?

• It is the maximum point

• It is the vertex

• It is the y-intercept

• It is an x-intercept