Functions vs Relations

The video tutorial introduces a problem about relations and functions, asking which statement is always true. It explains the concepts of relations and functions, highlighting that every function is a relation but not every relation is a function. The vertical line test is used to determine if a relation is a function. The correct answer is identified as 'every function is a relation'.

Provide an example of a relation that is not a function and explain why.

Why is the statement 'Every relation is a function' incorrect?