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In each of the following find the coordi...

In each of the following find the coordinates of the focus , axis of the parabola , the equation of the directrix and the length of the latus rectum.
`x^(2)=-16y`

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On comparing with `x^2= -4ay, 4a = 16` or, a=4.
Length of L.R.=4a =16
directrix is y = a or, y=4
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