Axis of Symmetry of Quadratic Functions

What is the axis of symmetry of the given function?

• y = 1

• y = -1

• x = 1

• x = -1

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

• y = -2

• x = 3

• x = -3

• y = 2

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

What is the vertex of this parabola?

• (−1, 3)

• (−3, 11)

• (−2, 5)

• (0, 5)

Create the axis of symmetry on the graph of this quadratic function.

Fill in the blank.The axis of symmetry is an imaginary line that passes through the parabola at (a)   and creates a mirror like image of the parabola on each side it.

• the vertex

• a y-intercept

• any random point

There are 3 points shown lie on the graph of a quadratic function. Which of the following is the line of symmetry for the quadratic function?

• x

• -2

• y

• -3

• -1

• 1.5

The vertical line that divides the parabola into two symmetric parts is called the

• vertex

• increasing axis

• decreasing axis

• axis of symmetry

Tags

CCSS.HSF-IF.C.7A

There are 3 points shown lie on the graph of a quadratic function. Which of the following is the line of symmetry for the quadratic function?

• x

• -2

• y

• -3

• -1

• 1.5

The axis of symmetry line always passes through which point?

• the origin

• the y-intercept

• vertex

• the x-intercept