Pre-Algebra Examples

$(4, 0)$ , $(30, - 7)$ , $(45, 0)$ , $(4, 8)$ , $(49, 8)$

Step 1

Since $x = 4$ produces $y = 0$ and $y = 8$ , the relation $(4, 0), (30, - 7), (45, 0), (4, 8), (49, 8)$ is not a function.

The relation is not a function.