Question

Which of the sets of ordered pairs represents a function? A = {(1, -2), (3,-5), (5,2), (7,5)}B = {(4,2), (4,-2), (9,3), (9,-3)}Only A Only B Both A and BNeither A nor B

Answer 1

In set A, all the inputs are different digit, hence it is a function

In set B, the inputs have the same value which is 4 and 9, hence it is not a function

Hence, the correct option is only A