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If two lines meet at (5,1), which pair of equations can represent this solution?

Answer and explanation

Correct answer: x+y=6 and x-y=4

The governing concept is graphical solution of a pair of linear equations: the coordinates of the intersection point must satisfy both equations simultaneously. Substitute x=5 and y=1 into each option. For option B, x+y=5+1=6 and x-y=5-1=4, so both equations are true. Therefore (5,1) lies on both lines represented by option B, making it their common graphical solution. In option A, the two required values are interchanged; option C uses 5 and 1 as separate results rather than the sum and difference; and option D gives 7 and 3, which do not match the point. Hence B is the only unambiguous answer.

Related tags

Solution VerificationGraphical MethodOrdered PairGraphical Method Of Finding Solutions.Graphical Method Of Finding SolutionsPair Of Linear Equations In Two VariablesMathematicsClass 10 Mcq

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