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If two equations satisfy a₁/a₂ = b₁/b₂ and this common ratio is also equal to c₁/c₂, what happens?

Answer and explanation

Correct answer: There are infinitely many solutions

For two linear equations a₁x + b₁y + c₁ = 0 and a₂x + b₂y + c₂ = 0, the condition a₁/a₂ = b₁/b₂ = c₁/c₂ means that all coefficients, including the constants, are in the same proportion. One equation is therefore a scalar multiple of the other, so both represent the same line. Since every point on that line satisfies both equations, the pair has infinitely many solutions. Unequal constant ratios would instead indicate distinct parallel lines.

Related tags

Linear EquationsRatio ConditionInfinite SolutionsConditions For SolvabilityPair Of Linear Equations In Two VariablesMathematicsClass 10 Mcq

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