You can see that the function is constantly equal to 3 if x is less than -2 (included). So, we have
[tex]f(x)=3[/tex] if [/tex] x\leq -2[/tex]
Similarly, the function is constantly 1 if x is less than -2 (excluded). So, we have
[tex]f(x)=1[/tex] if [/tex] x> -2[/tex]