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For prices of two items, the equations (9x+4y=360) and (27x+12y=1090) are formed. What type of system is this?

Answer and explanation

Correct answer: Inconsistent

Here, \(\frac{a_1}{a_2}=\frac{9}{27}=\frac{1}{3}\) and \(\frac{b_1}{b_2}=\frac{4}{12}=\frac{1}{3}\), but \(\frac{c_1}{c_2}=\frac{360}{1090}\neq\frac{1}{3}\). Thus, the two lines are distinct and parallel, so they have no solution and the system is inconsistent. Option B would be correct only if all three ratios were equal, giving infinitely many solutions. Exam tip: When \(\frac{a_1}{a_2}=\frac{b_1}{b_2}\neq\frac{c_1}{c_2}\), the system is inconsistent.

Related tags

Linear EquationsSolvability ConditionsInconsistent SystemClass 10 MathematicsConditions For SolvabilityPair Of Linear Equations In Two VariablesMathematicsClass 10 Mcq

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