The illustration at right shows a rectangular box, three of whose edges coincide with the coordinate axes, and one of whose vertices is (3, 6, 4). Give an equation for the plane containing the front face of the box. Do the same for the top and right faces.

Answer 1

the illustration is a rectangular box sitting on the x and y plane and one of the corners is on (0,0,0). the far corner of the box is (3,6,4).

Answer 2

not sure which face is the front, but clearly the point (3,6,4) lies on the plane x=3, and similarly for y and z.