$\"\"$

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Observe the graph:

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The vertex of the parabola is at $\"\"$ , So $\"\"$ and $\"\"$ .

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Since $\"\"$ the graph, Let $\"\"$ and $\"\"$ .

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Vertex equation form is $\"\"$ .

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Find $\"\"$ .

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$\"\"$ (Vertex form)

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$\"\"$ (Substitute $\"\"$ and $\"\"$ )

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$\"\"$ (Simplify)

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$\"\"$ (Subtract $\"\"$ from each side)

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$\"\"$ (Apply additive inverse property: $\"\"$ )

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$\"\"$ (Divide each side by $\"\"$ )

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$\"\"$ (Cancel common terms)

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The equation of the parabola in vertex form is $\"\"$ . $\"\"$

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The answer is A.