A relation R on a set A is called reflexive if (a,a) R for every element a A.
R does not contain (3,3) so it is not reflexive.
A relation R on a set A is called symmetric if (b,a) R whenever (a,b) R, for all a,b A. Since (1,2) R and (2,1) R, R is symmetric.
I'll leave transitive to you.