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If (a_1/a_2 \ne b_1/b_2), what will be the correct nature of the pair?

Answer and explanation

Correct answer: Consistent and independent

The direct answer is option C: consistent and independent. For a pair a1x+b1y=c1 and a2x+b2y=c2, if a1/a2 is not equal to b1/b2, the two lines have different slopes. Different slopes force the lines to intersect at exactly one point. A common point means the pair is consistent; exactly one common point means it is independent. Option A, inconsistent, applies when the lines are distinct and parallel, typically when a1/a2=b1/b2 but c1/c2 differs. Option B, consistent and dependent, applies to coincident lines with infinitely many solutions, when all three ratios are equal. Option D, no solution, is another description of inconsistency and contradicts the given unequal first two ratios. Memory cue: unequal first two ratios means one intersection, so choose consistent independent.

Related tags

Linear EquationsHardClassification

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