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Which situation is represented by (7x+y=10) and (14x+2y=25)?

Answer and explanation

Correct answer: Distinct parallel lines

For the two equations, \(\frac{a_1}{a_2}=\frac{7}{14}=\frac{1}{2}\) and \(\frac{b_1}{b_2}=\frac{1}{2}\), whereas \(\frac{c_1}{c_2}=\frac{10}{25}=\frac{2}{5}\). Thus, \(\frac{a_1}{a_2}=\frac{b_1}{b_2}\ne\frac{c_1}{c_2}\), which represents distinct parallel lines. Hence, the pair has no solution; option D states the algebraic consequence, but not the geometrical situation asked here. Exam tip: remember the condition \(\frac{a_1}{a_2}=\frac{b_1}{b_2}\ne\frac{c_1}{c_2}\) for distinct parallel lines.

Related tags

Linear EquationsParallel LinesConditions For SolvabilityNo SolutionCoordinate GeometryPair Of Linear Equations In Two VariablesMathematicsClass 10 Mcq

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