Question

A relation contains the points (-5, -10), (-2, -4), (-1, -2), (4, 8) and (5,10). Is this a function? Explain.

Please help i will mark branlist.

Answer 1

This is a function

Explanation:

Since none of the x-values repeat, then it would be a function. As long as no x-values repeat then we can call it a function. Even if the y-values repeat the same number, it would still be a function. This is also known as the "vertical line test" which we can use on graphs.