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What is the correct description of the graph of the equations (2x+11y=27) and (5x+19y=46)?

Answer and explanation

Correct answer: Lines intersecting at one point

For the two lines, \(\frac{a_1}{a_2}=\frac{2}{5}\) and \(\frac{b_1}{b_2}=\frac{11}{19}\). Since \(\frac{2}{5}\ne\frac{11}{19}\), the lines are neither parallel nor coincident; hence, they intersect at exactly one point and the pair has a unique solution. Perpendicular lines would require the product of their slopes to be \(-1\), which is not the required condition here. Exam tip: Compare \(\frac{a_1}{a_2}\) and \(\frac{b_1}{b_2}\) first to identify the number of solutions.

Related tags

Pair Of Linear EquationsGraphical SolutionUnique SolutionIntersecting LinesConditions For SolvabilityPair Of Linear Equations In Two VariablesMathematicsClass 10 Mcq

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