Question

Which of the following statements best represents the relationship between a relation and a function.

A function is always a relation but a relation is not always a function.
A relation is always a function but a function is not always a relation.
A relation is never a function but a function is always a relation.

Answer 1

A relation is a function, if and only if, the x- values do not repeat in a given set.

Answer 2

I think this is what you were after ;-)

Which of the following statements best represents the relationship between a relation and a function.

1. A function is always a relation but a relation is not always a function