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What type of solution region is given by x + y ≥ 4, x ≥ 0, and y ≥ 0?

Answer and explanation

Correct answer: Unbounded

The conditions x ≥ 0 and y ≥ 0 restrict the solution to the first quadrant. The inequality x + y ≥ 4 selects the side on or above the line x + y = 4. This region contains points such as (4, 0), (0, 4), (5, 0), and (0, 10), and it continues indefinitely as x or y increases. For example, every point of the form (t, 4) with t ≥ 0 satisfies all three inequalities, so there is no finite boundary enclosing the region. Hence the solution region is unbounded, making option B correct. It is not empty and is not a single point; it is also not bounded because it extends without limit.

Related tags

Linear InequalitiesUnbounded RegionFeasible RegionGraphical Solution Of Linear Inequalities In Two VariablesMathematicsClass 11 Mcq

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