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On a number line, a point is at a distance of \(\sqrt{2}\) units from the origin in the positive direction. What is the coordinate of the point?

Answer and explanation

Correct answer: \(\sqrt{2}\)

The distance from the origin is \(|x|\). Here \(|x|=\sqrt{2}\), and the point lies in the positive direction, so \(x=\sqrt{2}\). \(-\sqrt{2}\) is equally far from the origin but lies to the left. Exam tip: use the direction to choose the sign.

Related tags

Number LineIrrational NumbersCoordinateDistance From OriginSquare RootsNumber SystemsMathematicsClass 9 Mcq

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