Question

If x is not equal to y , then (x,y)=(y,x) yes or no

Answer 1

if x is not equal to y,then (x,y)≠(y,x)

because,if (x,y)=(y,x) then then x must be equal to y but given is x is not equal to y.
∴(x,y)≠(y,x)

Answer 2

If x is not equal to y 

then (x,y)≠(y,x) (no)