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What is the most suitable conclusion by observing the equations (7x+12y=53) and (21x+36y=159)?

Answer and explanation

Correct answer: There are infinitely many solutions

Every term of the second equation is three times the corresponding term of the first: 21x=3(7x), 36y=3(12y), and 159=3(53). Hence, both equations represent the same line, so they have infinitely many common points. Option B is incorrect because no solution occurs when the lines are distinct and parallel. Also, the non-zero constants show that the common line does not pass through the origin. Exam tip: If a₁/a₂ = b₁/b₂ = c₁/c₂, the pair has infinitely many solutions.

Related tags

Pair Of Linear EquationsSolvability ConditionsCoincident LinesInfinite SolutionsConditions For SolvabilityPair Of Linear Equations In Two VariablesMathematicsClass 10 Mcq

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