Find the Range f(x)=x+2 if x<-4; x-2 if x>=-4

$f (x) = {\begin{cases} x + 2 & x < - 4 \\ x - 2 & x \geq - 4 \end{cases}$

Step 1

The range is the set of all valid $y$ values. Use the graph to find the range.