Question

I'd really appreciate if anyone helped! :)

Which set of ordered pairs represents a function?


A. (1, 2), (1, 3), (1, 4), (1, 5)


B. (4, 1), (3, 2), (3, 3), (1, 4)


C. (1, 6), (2, 2), (4, 7), (3, 2)


D. (1, 6), (3, 2), (4, 7), (3, 4)

Answer 1

In order for the data set to represent a function, there can be no duplicates of the first value.

A. 1 is used as the first value more than once it is NOT a function

B. 3 is used as the first value more than once it is NOT a function

C. no first number is used more than once it IS a function

D. 3 is used as the first value more than once it is NOT a function

Answer: C