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What is the correct solution status for (6x-7y+13=0) and (18x-21y+40=0)?

Answer and explanation

Correct answer: No solution

Here, \(a_1/a_2=6/18=1/3\) and \(b_1/b_2=(-7)/(-21)=1/3\), whereas \(c_1/c_2=13/40\). Thus, \(a_1/a_2=b_1/b_2\ne c_1/c_2\), which represents an inconsistent pair of equations. The two lines are distinct and parallel, so they have no solution. Exam tip: Compare the ratios of the coefficients of \(x\), \(y\), and the constants in this order to identify the solution status quickly.

Related tags

Pair Of Linear EquationsConditions For SolvabilityNo SolutionParallel LinesCoefficient RatiosPair Of Linear Equations In Two VariablesMathematicsClass 10 Mcq

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