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What type of solution region is given by x≥0, y≥0, and x+y≥9?

Answer and explanation

Correct answer: unbounded region

The governing idea is to interpret the inequalities as half-planes. The conditions x≥0 and y≥0 restrict points to the first quadrant. The inequality x+y≥9 selects the side of the line x+y=9 that lies away from the origin, including the line itself. This region contains points such as (9,0), (0,9), (10,10), and infinitely many points farther northeast. There is no upper bound on x or y: if a point satisfies the conditions, sufficiently increasing either coordinate continues to satisfy them. Therefore the region extends indefinitely and is unbounded. Option D is correct. It is not a bounded triangle; the triangle near the origin corresponds to x+y≤9. It is not empty because (9,0) is a solution, and it is certainly more than a single line segment.

Related tags

Linear InequalitiesUnbounded RegionFeasible RegionClass 11Graphical Solution Of Linear Inequalities In Two VariablesMathematicsClass 11 Mcq

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