Question: how to solve lpp by graphical method?
Answer: Step 1: Formulate the LP (Linear programming) problem. ... 
Step 2: Construct a graph and plot the constraint lines. ... 
Step 3: Determine the valid side of each constraint line. ... 
Step 4: Identify the feasible solution region. ... 
Step 5: Plot the objective function on the graph. ... 
Step 6: Find the optimum point.