i have the same question. and i'm wondering how you can show antisymmetry as well. by definition, antisymmetry is: if xRy and yRx x=y.

The questions wants you to prove that for x,yE we say that xRy if y-x > T, where T is a fixed value = 5

but if we use antisymmetry on this, and we prove that y=x, then y-x won't be greater than T. so how can this be possilbe?

am i wrong in thinking this?