It depends on how you look at it. The other person who answered thought they were different lines, which they could be. I think the have the same path, and equation.
If you agree with me then there are infinitely many solutions since they share each point. These lines share the same slope and y-intercept.
If you think they are separate lines with no intersections then they are parallel lines without any solutions. These lines share the same slope but have different y-intercepts.