Question

Is relation a function

Answer 1

Answer:

all functions are relation but all relations are not function

Answer 2

A function is one kind of interrelationship among objects. ... Note that both functions and relations are defined as sets of lists. In fact, every function is a relation. However, not every relation is a function.

You could set up the relation as a table of ordered pairs. Then, test to see if each element in the domain is matched with exactly one element in the range. If so, you have a function!

hope it helps