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The equation of the parabola with vertex...

The equation of the parabola with vertex at the origin and directix is `y=2` is-

A

`y^(2) =-8x`

B

`y ^(2) =8x`

C

`x ^(2) =8y`

D

`x ^(2) =-8y`

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The correct Answer is:
D
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