# The Basics

## Vertex

The maximum of minimum point of the parabola. It is the point where the graph changes direction.

How do I Label this?

Use the vertex's coordinates! (x,y)

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## Optimal Value (Max. / Min. Value)

The vertex's height of the parabola. This is your y coordinate of your vertex!

The Maximum value is the highest point of the parabola while the minimum value is the lowest of the parabola. If the parabola has a max value, it will open downwards. If it has a min value, it will open upwards.

(x,y)

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## Axis of Symmetry

Where the parabola is divided into half equally. This is your x coordinate of your vertex!

(x,y)

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## Y- intercept

Where the parabola crosses the y - axis

How do I Label it?

Set your x at 0 and plug in the y value

(0,__)

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## X- intercept / Zeroes

Where the parabola crosses the x - axis

How do I Label it?

Set your y at 0 and plug in the x value

(__, 0)