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How will the lines \(3x+6y=24\) and \(x+2y=8\) appear on the graph?

Answer and explanation

Correct answer: Coincident

Dividing every term of the first equation by 3 gives \(x+2y=8\), which is exactly the second equation. Hence both equations represent the same line on the graph, so the lines are coincident and have infinitely many solutions. Parallel distinct lines require the constant terms not to be in the same ratio as the coefficients. Exam tip: compare \(a_1/a_2\), \(b_1/b_2\), and \(c_1/c_2\); if all three ratios are equal, the lines are coincident.

Related tags

Coincident LinesInfinite SolutionsGraphical MethodLinear EquationsGraphical Method Of Finding Solutions.Graphical Method Of Finding SolutionsPair Of Linear Equations In Two VariablesMathematics

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