Hi Sir, sorry to bother you yet again, the biggest issue when working linear programming questions is for me to identify which is the feasible region. I re looked at your lectures and even though you go through thorough explanation I still cannot understand what to look out for in the exam, or how to reason it out.
It is the area where all of the constraints are satisfied at the same time.
So assuming that the constraints are all ‘less than’ (which is the most common) then it is the area where you are below all of the lines at the same time.