State which of the following ordered pairs is a function. set a: (-1, 0), (-2, 1), (4, 3), (3, 4) set b: (1, 4), (2, 3), (3, 2), (4, 1) set c: (2, 1), (3, 2), (2, 3), (1, 4) a. set a b. set b c. both set a and set b d. set c

Set A: (-1, 0), (-2, 1), (4, 3), (3, 4) 
Set B: (1, 4), (2, 3), (3, 2), (4, 1) 
Set C: (2, 1), (3, 2), (2, 3), (1, 4)  is not a function because value of x =2 has two corresponding values of y 1, and 3.

Sets A and B do not have repeating values of x, so A. and B. are functions.

c. Both Set A and Set B