Line R is represented by the following equation: x+y=2
which equation completes the system that is satisfied by the solution (1,1)
2x +y=2
4x-2y=2
2x-2y=2
x+y=4
which equation completes the system that is satisfied by the solution (1,1)
2x +y=2
4x-2y=2
2x-2y=2
x+y=4