Find the coordinates of the focus and the vertex, the equations of the directrix and the axis, and length of the latus rectum of the parabola :
x2 = -18y
Given equation : x2 = - 18y
Comparing given equation with parabola having equation,
x2 = - 4ay
4a = 18
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Focus : F(0,-a)
Vertex : A(0,0) = A(0,0)
Equation of the directrix : y - a=0
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Lenth of latusrectum : 4a = 18