we have to try the answers let try the first given values
when x equal to -1 , y equal to 8
ok then in A it's incorrect because when we give x=-1 y=9 and this is wrong
ok what about B it's wrong too because when we give x=-1 y=2
ok now let's check C when we give x=-1 y=8
and this is correct so the answer is C
you would like to ask what about D its wrong too because 3/2 is not natural number and when we give x=-1 y=-5/2
