We have
2y = -x +1
x - 1 = 2y ...............(i)
Putting y = 0 we get x = 1 -2 x 0 = 1
Putting y = -1 we get x = 1 - 2(-1) = 3
Thus, we have the following table giving the two points on the line represented by the equation
2y = x + 3
2y = -x +1
Graph for the equation 2y = -x +1