Hello,

you know that a linear equation has a straight line as it's graph.

If you have the 2 linear equations

then you know that there are infinite many common points if

and

There is no solution (or there aren't any common points) if

With your problem:

1. Rearrange your equations ( , )

2. Use the general equations which I mentioned above

3. For confirmation only: Infinite many solutions with m = -5 and no solution with m = 3.