x + y = 4

–x + y = 2

Line x + y = 4 passes through (0, 4) and (4, 0)

Line -x + y = 2 passes through (0, 2) and ( -2, 0)

Not sure if I did this right but base on my findings of this equation I believe that the two lines are parallel to each other therefore there is no solution.

Am I right?