Algebra Examples

${(2, 4), (2, 6), (2, 8), (2, 10), (2, 12)}$

Step 1

Since $x = 2$ produces $y = 10$ and $y = 12$ , the relation $(2, 4), (2, 6), (2, 8), (2, 10), (2, 12)$ is not a function.

The relation is not a function.