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Which option is correct for (3x-2y=6) and (12x-8y=24)?

Answer and explanation

Correct answer: Coincident lines and infinitely many solutions

The second equation is 4 times the first: \\(12x-8y=24=4(3x-2y=6)\\). Hence both equations represent the same line, so the pair has infinitely many solutions. Using the coefficient test, \\(a_1/a_2=b_1/b_2=c_1/c_2=1/4\\). Therefore, the lines are coincident, not distinct parallel lines. Exam tip: when all three corresponding ratios are equal, the pair has infinitely many solutions.

Related tags

Linear EquationsCoincident LinesInfinite SolutionsSolvability ConditionsConditions For SolvabilityPair Of Linear Equations In Two VariablesMathematicsClass 10 Mcq

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