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Class 10 Mathematics Pair of Linear Equations in Two Variables Graphical method of finding solutions.Hard

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If the graph of (x+y=6) and (2x+2y=k) is coincident, what is the value of (k)?

Answer and explanation

Correct answer: (12)

The second equation must be (2) times the first, so (k=12). For coincident lines, the constant term also changes in the same ratio.

Related tags

Linear Equations Graphical Method Parameter Coincident Lines Graphical Method Of Finding Solutions.Graphical Method Of Finding Solutions Pair Of Linear Equations In Two Variables Mathematics

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