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How many corner points are in the solution region of \(x\geq 0\), \(y\geq 0\), \(x+y\leq 6\), and \(x+2y\leq 8\)?

Answer and explanation

Correct answer: 4

Corner points are intersections of boundary lines that satisfy every inequality. The feasible vertices are \((0,0)\), \((6,0)\), \((4,2)\), and \((0,4)\). Therefore, the solution region has 4 corner points. For example, \((0,6)\) is not feasible because it does not satisfy \(x+2y\leq 8\). Exam tip: Test every candidate intersection in all the inequalities.

Related tags

Linear InequalitiesGraphical SolutionFeasible RegionCorner PointsTwo VariablesGraphical Solution Of Linear Inequalities In Two VariablesMathematicsClass 11 Mcq

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