In my differential equations class he have started to cover 2X2 systems. I need help with the following problem.

To solve 2-by-2 systems, (1) on graphic paper draw lines and approximately find the solution; (2) solve analytically to find exact solutions.

(1 2) x = (0)
(3 3) = (1)

I solved the above matrix analytically as described for part b but how do i graph the matrix for part a? my teacher did not give any examples on how to graph these and our book does not have any information on this. thanks for any help