Algebra Examples

$(4, - 2)$ , $(- 2, 2)$ , $(2, - 2)$ , $(4, 2)$

Step 1

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

The relation is not a function.