How to Solve a Linear Programming Problem Using the Graphical Method

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In this lesson we learn how to solve a linear programming problem using the graphical method with an example. We also see an example for an in-feasible LP.
This video is HD, and Close Captioning is available.

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I'll definitely look at the other videos, in a crash course format. -- Immense gratitude.

aether

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Scatteril

The choice of Z is arbitrary, but we usually choose a Z value that gives us a line in the feasible region. I picked 60 only bcz its divisible by 3 and 2 and give me a line inside the feasible region. you could have selected other values such as 50 for your first line. However, for the second line, it is important to pick a value that is consistent with the objective function direction. i.e. for a max problem pick a bigger value, and for a min problem pick a smaller value than the first value. I could have chosen 100 instead of 120 and still get the right direction for the objective function improvement. Please Note that the whole purpose of doing this step is to find the direction to which we have to slide our OF line and thus our selections are arbitrary.

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