Question

How do I graph f(-2) of f(x)={5x-1, if x<-2
x-9, x>(or equal to) -2

Answer 1

To graph the single point at f(-2) you just find the function value there f(-2)=-2-9=-11 (since -2 >= -2). So the point at f(-2) is (x,y)=(-2,-11). The graph would look something like this: