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Question

Abscissa of a point is positive in


A

and II quadrants

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B

I and IV quadrants

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C

I quadrant only

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D

II quadrant only

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Solution

The correct option is B

I and IV quadrants


In the coordinate system, the ordinate is the second component of an ordered pair. For example, if (x,y) is an ordered pair, then y is the ordinate here. An ordered pair is used to denote a point in the Cartesian plane and the first coordinate (x), in the plane, is called the abscissa.

The distance of a point from y-axis scaled with the x-axis is called abscissa or X coordinate of the point. The distance of a point from x-axis scaled with the y-axis is called ordinate. The abscissa and ordinate all together are called coordinates.

Using the information, we can conclude the following:

The signs of the coordinates in

Firstquadrant=(+,+)

Secondquadrant=(-,+)

Thirdquadrant=(-,-)

Fourthquadrant=(+,-)

Hence, the abscissa of the point is positive in the first and fourth quadrant

So, the correct option is (b)


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