Q. 34.1( 38 Votes )

In each of

Answer :

The given equation is y2 = -8x

Here, the coefficient of x is negative.

Hence, the parabola open towards the left.

On comparing this equation with y2 = -4ax, we get,

-4a = -8

a = 2


Co-ordinates of the focus = (-a,0) = (-2, 0)

Since, the given equation involves y2, the axis of the parabola is the x-axis.

Equation of directrix, x =a, then,

y = 2

Length of latus rectum = 4a = 8

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