Determine if the relation R over the set of all integers is reflexive, where $($x$,$ y$)$ R if and only if:

Question $3$Answer

a$.$

x$>=$y

$2$

b$.$

x$=$y$+1$ or x$=$y$-1$

c$.$

x$!=$y

d$.$

x is a multiple of y$.$

e$.$

x and y are negative or both are non$-$negative.

f$.$

x$=$y

$2$

g$.$

xy$>=1$