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What is the point of intersection of the graphs of the lines \(x+2y=11\) and \(3x-2y=5\)?

Answer and explanation

Correct answer: Point \((4,\frac{7}{2})\)

The intersection point is the common solution of both linear equations. Adding the equations gives \(4x=16\), so \(x=4\). Substituting this into \(x+2y=11\) gives \(4+2y=11\), hence \(y=\frac{7}{2}\). Therefore, the intersection point is \(\left(4,\frac{7}{2}\right)\). In option B, the values of \(x\) and \(y\) are interchanged. Exam tip: Always substitute the ordered pair into both equations to verify the intersection point.

Related tags

Pair Of Linear EquationsGraphical MethodIntersection PointCoordinate GeometryElimination MethodGraphical Method Of Finding Solutions.Graphical Method Of Finding SolutionsPair Of Linear Equations In Two Variables

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