1. The problem statement, all variables and given/known data Find symmetric equations for the line of intersection of the planes The planes: 5x - 2y - 2z = 1 4x + y + z = 6 2. Relevant equations r = r0 + tv x = x0 + at y = y0 + bt z = z0 + ct 3. The attempt at a solution I have attempted this in many different manners and would like to find a way to the solution. The answer is: x = 1, y - 2 = - z The book doesn't have a good example for this problem, and as classes haven't started for me, I have no notes from lectures (i need to learn this for another class...taking 2 classes in which 1 is a prereq for the other). Any help would be appreciated.