Answer :


Consider A:


Given line x - y = 1


y = x - 1


As the region given in the figure is above the y - intercept’s coordinates (0, - 1),


y x - 1


x - y1


Consider B:


Given line 2x + y = 2


y = 2 - 2x


As the region given in the figure is above the y - intercept’s coordinates (0,2),


y 2 - 2x


2x + y 2


Consider C:


Given line x + 2y = 8


⇒2y = 8 - x


y = 4 -


As the region given in the figure is below the y - intercept’s coordinates (0,4),


y4 -


2y8 - x


x + 2y8


Consider D:


It is the region right side of the Y - axis.


It is x 0.


All the results derived:


x - y1


2x + y 2


x + 2y8


x 0


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