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In which case will the solution region of the graph be empty?

Answer and explanation

Correct answer: y > 4 and y < 1

A solution region is empty when the inequalities cannot be satisfied simultaneously by even one point. In option C, a point would have to satisfy y > 4 and y < 1 at the same time. No real number can be greater than 4 and less than 1, so the two boundary half-planes do not overlap and the intersection is empty. Hence option C is correct. Options A and B describe nonempty horizontal or vertical bands, since values such as y = 3 and x = 2 satisfy them. Option D also has solutions, for example (x, y) = (0, 0), which satisfies both conditions.

Related tags

Linear InequalitiesEmpty Solution RegionGraphical SolutionGraphical Solution Of Linear Inequalities In Two VariablesMathematicsClass 11 Mcq

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