Graphing Calculator -> Function Grapher -> Graph Piecewise Functions
Function Grapher has the ability of graphing 2D piecewise functions. The following figure shows the graph of piecewise function
    y=x-1, if x<-1
    y=-1, if x=-1
    y=x+1, if x>-1

 

Graphing Calculator -> Function Grapher -> Graph Piecewise Function

 

 

 

 

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