Question

Is {(3,1), (5,3), (7,5), (5,-1), (-3,3), (-7,2)} a function

Answer 1

It is not a function :) hope I helped!

Explanation:

Answer 2

No. It is not a function

Explanation:

A relation is said to be a function between sets when every element of the first set have exactly one image in the second set.

Since, the element of first set i.e. 5 have two images 3 and -1 in the second set, it is not a function.