For each relation, decide whether or not it is a function. Relation 1 Relation 2 Domain Range Domain Range -9 moon -6 0 chair 8 4 4 9 tree -6 desk 0 - 7 4 O Function O Not a function O Function O Not a function Relation 3 Relation 4 {(v, n), (e, e), (c, y), (n, y)) {(1, y),(-1, j), (-1, m), (-1, a)} O Function O Function O Not a function O Not a function X 5