Question

Which of the following sets represents a function?

Answer 1

There is nothing!

Answer 2

Which of the following sets represents a function?
A. {(3, 5), (-1, 7), (3, 9)}
B. {(1, 2), (3, 2), (5, 7)}
C. {(1, 2), (1, 4), (1, 6)}


The answer is B
B. IS a function because there is only one "y" value for each "x" value.