Question

Which of the sets of ordered pairs represents a function? A = {(1, −2), (3, −5), (5, 2), (7, 5)} B = {(5 3), (5, −3), (7, 5), (7, −5)}

Answer 1

A represents a function because the x-value doesn’t repeat

Answer 2

A represent function because each element of domain maps unique elemen t of range. but inB it has two images.