Identify each rule in the piecewise function
Determine the interval where each rule applies
Graph each rule only on its specified interval
Use a closed dot for included endpoints
Use an open dot for excluded endpoints
Check whether each endpoint is included or excluded from the inequality signs
Plot key points for each piece
Connect points only within the allowed interval
Do not extend any piece beyond its interval
Repeat for all pieces of the function
Verify that the graph matches all interval conditions