Graph each line.
The first line has a y-intercept of (0, 3.5) and a slope of 0.5.
The second line has a y-intercept of (0, 0.5) and a slope of -0.5.

The solutions to a system of linear equations correspond to the points of intersection of their graphs.
The two lines on this graph intersect at the point (-3, 2).
So, the solution to the system of equations is (-3, 2), or x = -3 and y = 2.