Question

Which of the following relations is NOT a function?

A. [(3,1),(2, -1).(1,1)]
B. ((3,1).(-1,2),(1,1))
C. {(1,3).(2.-1).(1,1))
D. ((-1,3).(-2,-1).(1.-1)]​

Answer 1

C.

Explanation:

Answer 2

It’s C because a function cannot have multiple Y values for a single X value.