If the limit as x approaches 1 from the left f(x)=3, the limit as x approaches 1 from the right f(x)=-1, and f(1)=1, what would the basic shape of the graph look like? 

If the limit as x approaches 1 from the left f(x)=3, the limit as x approaches 1 from the right f(x)=-1, and f(1)=1, what would the basic shape of the graph look like?