Algebra Examples

$(1, 1)$ , $(2, 2)$ , $(3, 3)$ , $(4, 3)$ , $(1, 2)$

Step 1

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

The relation is not a function.