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Graphical Method of Solving Linear Programming Problems

A 1, 0, B -2,...

Question

$A (1, 0), B (- 2, 0)$ and $D (1, - 3)$ are the vertices of a square $A B C D .$ By plotting the given points on a graph paper, find the co-ordinates of the unknown vertex $C .$

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Solution

Mark the points $A, B, D$ . Extend the sides to meet at $C$ . Hence, $C = (- 2, - 3)$

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