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Perpendicularity and Distance of a Point from a Line

If the coordi...

Question

If the coordinates of points A and B on a number line are -2 and 5 respectively, then the distance d(A,B) is __________.

A

-2

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B

5

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C

7

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D

3

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Solution

The correct option is C 7
Given that the coordinates of points A and B on a number line are -2 and 5 respectively.

We know that 5 > -2.

$∴$ d(A,B) = 5 - (-2) = 7 units

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