Question

2) The coordinates of the three given points must satisfy the equation of the plane. Using (3,0,0), we have 3A = D; from (0,8,0), we find 8B = D; and with (0,0,6) we find 6C = D. Since 3A = D = 8B, we find B = (3/8)A; since 3A = 6C, we find C = (1/2)A. These values tell us that the equation of the plane may be written