Algebra Examples

${(- 3, - 7), (- 2, 1), (4, 2), (4, - 4)}$

Step 1

Since $x = 4$ produces $y = 2$ and $y = - 4$ , the relation $(- 3, - 7), (- 2, 1), (4, 2), (4, - 4)$ is not a function.

The relation is not a function.