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Which statement is correct by observing the equations (14x+9y=61) and (28x+18y=122)?

Answer and explanation

Correct answer: Lines are the same

The second equation is exactly twice the first: multiplying 14x+9y=61 by 2 gives 28x+18y=122. Hence both equations represent the same line and the pair has infinitely many solutions. Option A is incorrect because distinct parallel lines require the ratio of the constants to differ from the ratios of the corresponding coefficients. Option C represents a unique solution, which is not possible here. Exam tip: if a₁/a₂ = b₁/b₂ = c₁/c₂, the two lines are coincident.

Related tags

Pair Of Linear EquationsConditions For SolvabilityCoincident LinesInfinitely Many SolutionsClass 10 MathematicsPair Of Linear Equations In Two VariablesMathematicsClass 10 Mcq

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