$\"\"$

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Observe the graph:

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The parabola is vertical and vertex is $\"\"$ .

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Standard form of vertical parabola is $\"\"$ .

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Where $\"\"$ is vertex.

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If $\"\"$ then the parabola opens down and $\"\"$ parabola opens up.

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The parabola passes through the point $\"\"$ .

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$\"\"$

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Find the value of $\"\"$ .

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Substitute $\"\"$ and $\"\"$ in standard form.

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$\"\"$

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$\"\"$

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$\"\"$ .

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Substitute $\"\"$ and $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$

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The equation of the parabola is $\"\"$ .