$\"\"$

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Parabola is horizontal as it has horizontal axis.

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Parabola passes through the points $\"\"$ and $\"\"$ .

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

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$\"\"$

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Equation of horizontal parabola is in the form of $\"\"$ , where $\"\"$ , $\"\"$ and $\"\"$

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

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$\"\"$

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

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$\"\"$

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

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$\"\"$

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Add (1) and (2).

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$\"\"$

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$\"\"$ .

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

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$\"\"$

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Substitute corresponding values in $\"\"$ .

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$\"\"$ .

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$\"\"$

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The parabola equation is $\"\"$ .