# What is the input and the output for the points (2,3) and (-4, 0)?

The inputs are the $x$ values, or the left number in each pair of points: $\text{Input } = \left\{2 , - 4\right\}$
The outputs are the $y$ values, or the right number in each pair of points: $\text{Input } = \left\{3 , 0\right\}$