1. The problem statement, all variables and given/known data http://i.imgur.com/FuMGN [Broken] 2. Relevant equations 3. The attempt at a solution I know that for a linear system to be consistent it must have one or more answers. After some row operations I get this matrix: http://i.imgur.com/KTEkF [Broken] I know that if I have a row of zeros that I have a trivial solution, so do I need to equate b-a-c to zero? B - A - C = 0?