We are given that L and M are added in coordinate plane.
And Slope of JK is equal to the slope of LM.
There could two two cases when slope of two lines are same on a coordinate plane.
Case 1:
Either lines would be inconsistent when lines would be parallel.
The lines would not cut each other at any point.
Case 2:
Or the lines would be consistent or dependent.
Slopes of both lines would be same and all the points, J, K , L and M would be on a same line.