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Which statement is correct for 13x + 2y = 19 and 4x + 5y = 11?

Answer and explanation

Correct answer: Lines intersect at one point

Write the equations in standard form if needed and compare the ratios of corresponding coefficients. The x-coefficient ratio is 13/4, while the y-coefficient ratio is 2/5. Since 13/4 and 2/5 are unequal, the coefficients are not proportional. In geometric terms, the slopes are −13/2 and −4/5, which are different. Lines with different slopes cannot be parallel or coincident; they intersect at exactly one point. Therefore the pair is consistent and independent and has one unique solution. Option C is correct. Option A and option D describe distinct parallel lines, while option B describes coincident lines. The unequal coefficient ratios are sufficient to identify the unique intersection without calculating its coordinates.

Related tags

Linear EquationsUnique SolutionCoefficient RatiosIntersecting LinesConditions For SolvabilityPair Of Linear Equations In Two VariablesMathematicsClass 10 Mcq

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