Answer
The given function is $linear$.
$Slope = 0.5$.
Work Step by Step
Step-1: Plot the graph with the given data. The graph obtained is shown below. It can be seen that it is a straight line, so the function is $linear$.
Step-2: Slope $=\frac{\Delta y}{\Delta x}=\frac{-2-(-4)}{2-(-2)}=0.5$.
