Question

Which relation is a function?








A.

{(1, 2), (1, 5), (1, –1), (1, 4)}








B.

{(7, 12), (1, –5), (3, –10), (2, –5)}








C.

{(–3, 4), (–2, 5), (0, 9), (0, 12)}








D.

{(8, –1), (2, –1), (3, 8), (2, 5}

Answer 1

@Hero @precalchelp

Answer 2

@pandaluver44

Answer 3

B because all of the x values have different y values. You can't have two of the same x values (input) with different y values (output).