Problem: Graph -5x + y =5 and -x + y =5 on the same axis
Graph both equasions on the same set of axis then reading the solution of the graph.
-5x + y =5
-x + y =5
The solution is obvious. Both equations have the same y-intercept: (0, 5)
-5x + y = 5
y = 5x + 5
-x + y = 5
y = x + 5