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A student writes only one intersection point for the graphs of (2x+3y=12) and (4x+6y=24). What is the mistake?

Answer and explanation

Correct answer: Treating coincident lines as having one solution

The second equation is (2) times the first, so the lines are coincident. Coincident lines have infinitely many solutions, not only (1).

Related tags

Common MistakeCoincident LinesInfinite SolutionsGraphical Method Of Finding Solutions.Graphical Method Of Finding SolutionsPair Of Linear Equations In Two VariablesMathematicsClass 10 Mcq

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