Anyone familiar with Matlab?

Never used it before & have too answer some problems for my Linear Algebra Engineer class.

One problem:

4x - 5y = 3

-8x + 10y = 14

My input:

A = [4 -5, -8 10]

b = [3; 14]

linSolve(A, b) =

                            Inf
                            Inf

rref([A b])

ans =

1.0 -1.25 0

0 0 1.0

So the answer will be No solution. But how would I graph it to show the two equations are parallel?