Question: Second Use the Graphical method to solve the following Linear Programming Model: (1)Max. z = 6x1 + x2 St. x1 + x2 5 x1 2

Second Use the Graphical method to solve the following Linear Programming Model:

(1)Max. z = 6x1 + x2 St. x1 + x2 5 x1 2 x2 4 x1, x2 0

(2)Min. z = x1 - x2 St. x1 + x2 4 2x1 + x2 10 x1, x2 0

(3)Min. z = x1 + x2 St. x1 + x2 2 2x1 + x2 4 x1, x2 0

(4)Max. z = 2x1 + x2 St. 3x1 + 2x2 12 x1 6 x1, x2 0

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