IXL - Find properties of a parabola from a graph (Geometry practice)

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question

The graph shows a parabola. What are the coordinates of its vertex?

key idea

The axis of symmetry is the line that divides a parabola into two parts that are mirror images. If the parabola opens up or down, the axis of symmetry is vertical. If the parabola opens right or left, the axis of symmetry is horizontal. For example:

The vertex is the point where the axis of symmetry intersects the parabola.

solution

Look at the graph of the parabola:

The axis of symmetry is the

-axis,

which is

So, the

-coordinate

of the vertex is 0. Also, the graph shows the

-coordinate

is 4. Together, that means the vertex is

(

)

Looking for more? Try these:

Lesson: Quadratic functions

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Work it out

Not feeling ready yet? These can help:

I.1Coordinate plane review

L.12Equations of horizontal and vertical lines

Lesson: Quadratic functions

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