Pre-Algebra Examples

$(13, 2)$ , $(16, - 1)$ , $(43, 2)$ , $(13, 5)$ , $(57, 5)$

Step 1

Since $x = 13$ produces $y = 2$ and $y = 5$ , the relation $(13, 2), (16, - 1), (43, 2), (13, 5), (57, 5)$ is not a function.

The relation is not a function.