Question

Is the following relation a function? x y −1 −2 2 3 3 1 6 −2

Answer 1

Yes because no same x-valu resulted in different y-values.

Answer 2

A function is considered a function when its plot passes the vertical line test which means no two points should lie on the same vertical line. This means no two points should have the same x. In this case, we are given with the points and see that there are no points with the same x's. This means this relation is a function