The last question please

3. Relations and Their Properties (12 points) (1) (3 points) List all of the ordered pairs in the relation R [(a, b)la +b is (2) (4 points ) Determine whether the relation R on the set of all people is even) on the set (1,2,3,4,5) reflexive, symmetric, antisymmetric, and/or transitive, where (a, b) E R if and only if is taller than b. (b) a and b were born on the same day (3) (4 points) Determine whether the relation R on the set of all real numbers is reflexive, symmetric, antisymmetric, and/or transitive, where (z, y) E R if and only if (a) -2y (b) ry 0 (4) (1 points) Which, if any, of the relations from the previous two problems is an equivalence relation