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The article discusses the restriction of variables to integers in linear programming problems through the use of graphic linear system. It mentions the use of the corner point principle that states the presence of a unique optimal solution to a linear programming problem and the need for the problem to lie at a vertex. It cites the effective analysis of the corners with integer coordinates.

The article discusses the basics of a good mathematical problem. It mentions that a good mathematical problem should conform with the skills and attitudes of both the teachers and the students. It adds that the problem solver should decide on which technique he would use to solve the mathematical problem. It cites the benefits of using real life data on the part of the problem solver.