I've been able to find the removable and infinite discontinuity and where it is continuous, but i've no idea how to find the interval where there is a jump.Code:`Given this piecewise function`

f(x)=

-x+b if x<-2

5 if x=-2

((-5)/(x-b))+4 if x>-2

For what value(s) of $\displaystyle b$ does $\displaystyle f$ have a (finite) jump discontinuity at −2? Write your answer in interval notation.