Question
The optimal value of the objective function is attained at the points
  1. given by intersection of inequations with the axes only
  2. given by intersection of inequations with x-axis only
  3. given by corner points of the feasible region
  4. none of these

Answer

  1. given by corner points of the feasible region
Solution:
It is known that the optimal value of the objective function is attained at any of the corner point.
Thus, the potimal value of the objective function is attined at the points given by corner points of the feasible region.

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