6) Select all tables that could represent a function. (Select 3) X у х y х у Х y х y 4 8. 0 3 1 1 -1 5 1 3 0 -1 2 А 2 3 3 -4 5 2 -2 0 B С D 1 -3 4 5 3 5 -6 3 0 4 9 O 6 0 5 3 5 -9