Question

Determine whether the relation is a function. Explain why or why not.

{(2, 5), (3, –5), (4, 5), (5, –5)}

Answer 1

This relation is a function. This is because no x value is repeated, so it passes the vertical line test.

Here is an example of where a relation is NOT a function:

{(2, 5), (3, –5), (2, 5), (5, –5)}

Hope this helps!