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Ok, think of this...  = plane > = plane normal X = Position I need to find
X

>

X
How would I find X from the plane normal if the normal is thought to be in the direct center of the plane. For this example, adding or subtracting from the y value would be the answer, but what if the plane is diagonal? You would have to add/subtract from x, y, & z to get a correct perpenticular point.
Ok so we know that Ax + By + Cz + D = 0 is the standard equation for a plane. Given that we know that the vector (A, B, C) is the normal vector for the plane.