I have a problem to do that is similar to this: $R_1$ is over the set of real numbers
(a) $(x, y) \in R_1$ if and only if $xy = 5$
decide whether it is reflexive, anti-reflexive, symmetric, anti-symmetric and transitive.
I'm confused, I know that reflexive means x=x and symmetric means that x,y implies y,x. I think it's the format of the question that is throwing me off. Help is very much appreciated.