<h3>
Answer: { } or empty set.</h3>
Step-by-step explanation:
We are given two lines on the graph.
Line l and line m.
Lines l and m are parallel to each other.
Parallel lines never intersect each other at any point.
<em>Note: Solution of a system or a set of lines on the graph are the point(s) where lines intersect each other.</em>
As we know parallel lines would not intersect each other at any point, there would not be any solution of the system.
<h3>So, the solution set would be { } or empty set.</h3>