Signs of Coordinates

Here we will learn about the signs of coordinates.

\(\overrightarrow{X'OX}\) and \(\overrightarrow{Y'OY}\) represent the co-ordinate axes. The ray \(\overrightarrow{OX}\) is taken as positive x-axis. So, any distance along \(\overrightarrow{OX}\) will be taken as positive and the ray \(\overrightarrow{OX'}\) is taken as negative x-axis. So, any distance move along \(\overrightarrow{OX'}\) will be taken as negative.

Similarly, ray \(\overrightarrow{OY}\) taken as positive y-axis. So, the distance moved along \(\overrightarrow{OY}\) will be taken as positive and \(\overrightarrow{OY'}\) is taken as negative y-axis. So, the distance moved along \(\overrightarrow{OY'}\) will be taken as negative.



So, In Quadrant I, x > 0, y > 0

In Quadrant II, x < 0, y > 0

In Quadrant III, x < 0, y < 0

In Quadrant IV, x > 0, y < 0




Quadrants

The graph will help us to understand the convention of the signs of coordinates.

Signs of Coordinates

(i) The co-ordinates of any point lies in the first quadrant have both the abscissa and ordinate are positive i.e. (+, +).

(ii) The co-ordinates of any point lies in the second quadrant have the abscissa negative and ordinate positive i.e. (-, +).

(iii) The co-ordinates of any point lies in the third quadrant have both the abscissa and ordinate are negative i.e. (-, -).

(iv) The co-ordinates of any point lies in the fourth quadrant have the abscissa positive and ordinate negative i.e. (+, -).

Related Concepts:

Coordinate Graph

Ordered pair of a Coordinate System

Plot Ordered Pairs

Coordinates of a Point

All Four Quadrants

Find the Coordinates of a Point

Coordinates of a Point in a Plane

Plot Points on Co-ordinate Graph

Graph of Linear Equation

Simultaneous Equations Graphically

Graphs of Simple Function

Graph of Perimeter vs. Length of the Side of a Square

Graph of Area vs. Side of a Square

Graph of Simple Interest vs. Number of Years

Graph of Distance vs. Time







7th Grade Math Problems

8th Grade Math Practice

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