Question 37063
-X+3Y=-1 OR X=3Y+1 SUB 3Y+1 FOR X IN EQUATION #1 WE GET

4(3Y+1)-12Y=5 OR 12Y+4-12Y=5 OR 4=5  (NO SOLUTION) IF YOU PLOT THESE TWO LINES YOU'LL FIND THAT THEY ARE PARALLEL)