A system of linear equations with two variables can be solved using graphs. In this type of systems each equation defines a line in the grid. The point where these lines met gives us the solution to the system.
In this case, we have two lines which means that we are solving a system of two equations with two variables. As I stated before the solution is given by the point where these two lines met. Looking at the graph you can see that this point is (1,7). Then the solution to the system is (1,7).
Another possible way to write this solution is:
