Quadratic Functions

What is the domain of the function?

*Hint: Domain is the set of all x-values included in the function.

• All real numbers

• -1≤x≤5

• x≤3

• x≥3

In the picture, what does the coordinate (0, -2), where the parabola crosses over the y-axis, represent?

• the x-intercept

• the minimum

• the axis of symmetry

• the y-intercept

The graph of a quadratic function is called a

• line

• parabola

• half oval

• vertex form

The minimum of a quadratic function is

• The lowest point (vertex) on a graph when a parabola opens up; the point where the graph changes from decreasing to increasing
• The highest point (vertex) on a graph when a parabola opens down; the point where the graph changes from increasing to decreasing

The maximum of a quadratic function is

• The highest point (vertex) on a graph when a parabola opens down; the point where the graph changes from increasing to decreasing
• The lowest point (vertex) on a graph when a parabola opens up; the point where the graph changes from decreasing to increasing

the line through the parabola so that each side is a mirror image

• Vertex

• Maximum

• Axis of Symmetry

• Maximum

The axis of symmetry line passes through which point?

• y-intercept
• any random point
• vertex
• symmetrical point for the vertex

Which best describes the vertex of a parabola?

• Any point on the parabola.
• A point on the x-axis.
• The highest or lowest point of a parabola
• A point on the y-axis.

What is the name of this form:
y = a(x - h)² + k

• vertex form
• standard form
• factored form
• zero form

What is the name of this form:
y = ax² + bx + c

• vertex form
• standard form
• factored form
• zero form