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If two lines have different slopes, which statement is correct?

Answer and explanation

Correct answer: The pair is consistent and independent with one unique solution

Two lines with different slopes cannot be parallel or coincident, so they intersect at exactly one point. Hence, the pair of linear equations is consistent and independent and has one unique solution. Options B and D describe infinitely many solutions, which occur for coincident lines having the same slope. Exam tip: different slopes imply one unique solution; equal slopes with different intercepts imply no solution; and equal slopes with equal intercepts imply infinitely many solutions.

Related tags

Linear EquationsSlopeSolvabilityUnique SolutionConsistent IndependentConditions For SolvabilityPair Of Linear Equations In Two VariablesMathematics

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