Question

Which of the table represents a function ?

A-4 3
3 2
3 1

B-1 3
3 5
5 7

C- 0 0
1 4
1 5

D-4 1
4 2
4 3

Answer 1

Function is a process that associates to each element of a set X a one element of a set Y.

Your answer is B.

A-not (double 3);

C-not (double 1);

D - not (double 4)