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The equation of the parabola is . \ \

Rewrite the equation . \ \

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The standard form of the equation of parabola with vertex is . \ \

Compare the equation with standard form. \ \

Here and and . \ \

Vertex : . \ \

Focus : . \ \

Substitute and . \ \

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Directrix : . \ \

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. \ \

The directrix is . \ \

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Graph : \ \

Graph the parabola

Plot the vertex ,focus and directrix . \ \

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Vertex , focus and directrix . \ \

Graph : \ \

Graph of the parabola is \ \

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