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What is the most suitable conclusion by observing the equations (9x+14y=71) and (27x+42y=213)?

Answer and explanation

Correct answer: There are infinitely many solutions

Every term in the second equation is three times the corresponding term in the first: 27=3×9, 42=3×14, and 213=3×71. Thus, both equations represent the same line, so every point on that line satisfies both equations. Therefore, the pair has infinitely many solutions. A no-solution or distinct-parallel-lines conclusion would require the coefficients of x and y to be proportional but the constants not to be proportional; here all three ratios are equal. Exam tip: If a₁/a₂ = b₁/b₂ = c₁/c₂, the pair has infinitely many solutions.

Related tags

Pair Of Linear EquationsConditions For SolvabilityInfinite SolutionsCoincident LinesClass 10 MathematicsPair Of Linear Equations In Two VariablesMathematicsClass 10 Mcq

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