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Find the equation of the parabola passin...

Find the equation of the parabola passing through the points (3,0), (-3,0) , (2,5) and having its axis parallel to the y - axis find the coordinates of its vertex .

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The correct Answer is:
`y = a x ^(2) + bx + c ` or `y = - x^(2) + 9 ` or `x^(2) = - ( y - 9)`
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