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When does a pair of linear equations in two variables have no solution by the graphical method?

Answer and explanation

Correct answer: When the two lines are distinct and parallel

In the graphical method, a solution is represented by a common point of the two lines. Distinct parallel lines never intersect, so they have no common point and the pair has no solution. Lines intersecting at one point give one solution, whereas coincident lines have infinitely many solutions. Exam tip: distinct parallel lines represent an inconsistent pair.

Related tags

Graphical MethodNo SolutionParallel LinesLinear EquationsInconsistent PairGraphical Method Of Finding Solutions.Graphical Method Of Finding SolutionsPair Of Linear Equations In Two Variables

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