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What is the correct solution status for (15x+4y=37) and (7x+2y=18)?

Answer and explanation

Correct answer: One unique solution

The determinant of the coefficients is \\(15 \times 2 - 7 \times 4 = 2\\), which is non-zero. Therefore, the two lines intersect at exactly one point, so the pair has a unique solution. Infinitely many solutions would require the corresponding ratios of the coefficients and constant terms to be equal. Exam tip: If \\(a_1b_2-a_2b_1 \ne 0\\), a pair of linear equations has exactly one unique solution.

Related tags

Linear EquationsUnique SolutionSolvabilityCoefficient RatiosConditions For SolvabilityPair Of Linear Equations In Two VariablesMathematicsClass 10 Mcq

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