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Which is the intersection point of (2x+y=10) and (x+2y=8)?

Answer and explanation

Correct answer: (4, 2)

From the first line, y=10-2x. Substituting this in x+2y=8 gives x+2(10-2x)=8, so -3x=-12 and x=4. Then y=10-2(4)=2. Hence, the intersection point is (4, 2). For example, (2, 4) does not satisfy the first equation because 2(2)+4=8, not 10. Exam tip: Verify an intersection point by substituting it into both linear equations.

Related tags

Linear InequalitiesLinear EquationsIntersection PointGraphical SolutionTwo VariablesClass 11Graphical Solution Of Linear Inequalities In Two VariablesMathematics

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