Math
posted by Linda .
Graph the equation X = 1/2 y2

This is not a straight line it is a parabola. You will need several points.
some are:
(0,0), (2,2), (2,2), (8,4), (8, 4) , etc
(I picked an even number for y, then found the x)
plot these and see the general outline of your curve.