Algebra Examples

$(1, 3)$ , $(2, 3)$ , $(4, 3)$ , $(9, 3)$

Since there is one value of $y$ for every value of $x$ in $(1, 3), (2, 3), (4, 3), (9, 3)$ , this relation is a function.

The relation is a function.

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$