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If a > b and k > 0, which of the following statements is correct?

Answer and explanation

Correct answer: ak > bk

Multiplying both sides of a > b by the positive number k does not reverse the inequality, so ak > bk is correct. Option B would be possible only if k were negative. Adding or subtracting the same number preserves the direction, so options C and D are also incorrect. Exam tip: multiplication or division by a positive number keeps the inequality sign unchanged; multiplication or division by a negative number reverses it.

Related tags

Linear InequalitiesInequality PropertiesPositive MultiplierSign ReversalIntroduction To InequalitiesMathematicsClass 11 Mcq

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