Question

Can someone please explain to me how to solve this?

Which set of ordered pairs represents y as a function of x?


A (0, 0.5), (2, 1.5), (−5.5, 5), (−5.5, −6)

B (5, −7), (3, −7), (−9.2, −7), (9.2, −7)

C (9.3, −1), (7.3, −2), (7.3, 2), (9.3, 1)

D (8.1, 9), (9.1, 10), (10.1, 9), (9.1, 8)

Answer 1

B.

Explanation:

A C and D are not functions as they are one - to - many whereas B is many-to-one.