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Find the coordinates of the focus, axis of the parabola, the equation of the directrix and the length of the latus rectum.`x^2=-16 y`

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Find the coordinates of the focus, axis of the parabola, the equation of the directrix and the length of the latus rectum.`x^2=-16 y`
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given that `x^2 = 4(-4)y`
`a=-4`
focus `(0,-4)`
axis `= y`axis
eqn of directrix
`y= +4`
length of L.R= `4a=16`
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