$\"\"$

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The standard form of quadratic function $\"\"$ and its vertex is $\"\"$ .

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Observe the given graph of parabola. :

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Vertex is $\"\"$ and point $\"\"$ .

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

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$\"\"$

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$\"\"$ .

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The parabola passes through the point $\"\"$ , it follows that $\"\"$ .

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$\"\"$

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Substitute the point $\"\"$ in the above equation.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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Substitute the corresponding values in standard form of parabola.

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$\"\"$

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$\"\"$ .

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The equation of parabola in standard form is $\"\"$ . $\"\"$

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The equation of parabola in standard form is $\"\"$ .