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If \(\frac{a_1}{a_2}=\frac{b_1}{b_2}=\frac{c_1}{c_2}\), what is the solution status of the pair?

Answer and explanation

Correct answer: Infinitely many solutions

When \(\frac{a_1}{a_2}=\frac{b_1}{b_2}=\frac{c_1}{c_2}\), the two linear equations represent the same line; that is, the lines are coincident. Hence, every point on the line satisfies both equations, giving infinitely many solutions. No solution occurs in the close but different case \(\frac{a_1}{a_2}=\frac{b_1}{b_2}\ne\frac{c_1}{c_2}\). Exam tip: If all three ratios are equal, identify coincident lines and infinitely many solutions immediately.

Related tags

Class 10Linear EquationsSolvabilityCoincident LinesInfinitely Many SolutionsConditions For SolvabilityPair Of Linear Equations In Two VariablesMathematics

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