In computer graphics and perspective drawing, we need to represent objects seen by the eye in space as images on a two-dimensional plane. Suppose that the eye is at E(x0,0,0) as shown here and that we want to represent a point P1 (x1,y1,z1) as a point on the yz-plane. We do this by projecting P1 onto the plane with a ray from E. The point P1 will be portrayed as the point P(O,y,z). The problem for us as graphics designers is to find y and 2 given E and P1. Complete parts (a) and (b). Express y and z in terms of x0, x1, y1, and 21. ' x0Y1 y: _ X0 X1 ' X021 Z = Xo'x1