Quadratic Functions on a Graph

Define Axis Of Symmetry

• A line that divides the graph into two equal parts. i.e. cuts the graph in half

• Where the parabola touches or intersects the x-axis, also called the x-intercept

• The highest y-value on the graph

• The highest or lowest point on the graph

Which function has an axis of symmetry of x = 0?

• 
• 
• 
• None of the above

If the vertex of a parabola is (2, −3), what is the axis of symmetry?

Does this graph have maximum or minimum value?

• maxima

• minima

• neither

• both

Identify the y-intercept

• (0, -3)

• (3, 0)

• (0, 3)

• (2, 1)

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 point in which a graph hits the x-axis is know as the _____

• Solution

• x-intercept

• Root

• All answers are correct

The graph of a quadratic function is called a

• line

• parabola

• half oval

• vertex form

If the vertex of this graph is (2, -1), what is the axis of symmetry?

• x= -1

• x = 2

• y = -1

• x = -2

Does the quadratic have a max/min vertex, and does the parabola open up/down?

• max/ opens down

• min/ opens up

• max/ opens up

• min/ opens down