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What is the relation among all three ratios in the equations (9x+16y=74) and (27x+48y=222)?

Answer and explanation

Correct answer: All three ratios are equal

The ratios of the corresponding coefficients and constants are \(\frac{9}{27}=\frac{16}{48}=\frac{74}{222}=\frac{1}{3}\). Hence, all three ratios are equal. When \(\frac{a_1}{a_2}=\frac{b_1}{b_2}=\frac{c_1}{c_2}\), the two linear equations represent the same line and have infinitely many solutions. Exam tip: Always compare the ratio of the constant terms as well; checking only the coefficients of x and y is not sufficient.

Related tags

Linear EquationsSolvability ConditionsRatio Of CoefficientsCoincident LinesClass 10 MathematicsConditions For SolvabilityPair Of Linear Equations In Two VariablesMathematics

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