RS Aggarwal Solutions Class 9 Maths Chapter 5 Coordinate Geometry (Updated For 2021-22)

RS Aggarwal Solutions Class 9 Maths Chapter 5 Coordinate Geometry: Class 9 Maths is made easier, all thanks to the RS Aggarwal Solutions Class 9 Maths. All the solutions of RS Aggarwal Solutions Class 9 Maths Chapter 5 Coordinate Geometry are designed in a way that are easy to understand, well-explained and very accurate, all thanks to the subject matter experts.

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RS Aggarwal Solutions Class 9 Maths Chapter 5 Coordinate Geometry

RS Aggarwal Solutions Class 9 Maths Chapter 5 Coordinate Geometry – Overview

Here are some of the key topics of Chapter 5 of RS Aggarwal Solutions Class 9 Maths:

• Cartesian System: The cartesian system is the system which describes the position of a point in a plane. In cartesian system, there are two lines perpendicular to each other and a point is denoted on it by referring to these lines. The horizontal axis is the XX’ or X-axis and the vertical axis is YY’ or Y-axis.

1. Origin: The point where these perpendicular axes intersect and denoted by ‘O’.
2. OX: The positive X-direction.
3. OY: The positive Y-direction.
4. OX’: The negative X-direction.
5. OY’: The negative Y-direction.
6. Quadrant: The two axes divide the cartesian system into 4 parts and follows the numbering I, II, III, and IV in an anticlockwise direction from the OX axis.
7. Coordinate axis is the other name for these axes.
8. In a catersian plane there are axes and 4 quadrants. The cartesian plane is also known as the coordinate plane.

• Steps To Find Coordinates Of A Point

1. X-Coordinate: It is the perpendicular distance of a point from the y-axis which is measured along the x-axis and has a positive value if it lies on the positive side of the x-axis and a negative value if it is on the negative side. The x-coordinate of a point is termed as its abscissa.
2. Y-Coordinate: It is the perpendicular distance of a point from the x-axis which is measured along the y-axis and has a positive value if it lies on the positive side of the y-axis and a negative value if it is on the negative side. The y-coordinate of a point is also termed as it’s ordinate.
3. Both the x and y coordinates of a point are placed within a bracket with the x coordinate preceding the y coordinate, for example (x1, y1).
4.  

• Rules to govern the relationship between the signs of a coordinate of point and the quadrant in which it lies.

1. Quadrant I – It is a point in the first quadrant has positive x and y coordinates (+,+) as the first quadrant lies on the positive side of both x and y axes.
2. Quadrant II – It is a point in the second quadrant has a negative x and a positive y coordinate (-,+) as the second quadrant lies on the negative side of the x-axis and positive side of the y axis.
3. Quadrant III – It is a point in the third quadrant has a negative x and a negative y coordinate (-,-) as the third quadrant lies on the negative side of both the x-axis and the y axis.
4. Quadrant IV – It is a point in the fourth quadrant has a positive x and a negative y coordinate (+,-) as the fourth quadrant lies on the negative side of the x-axis and positive side of the y axis.
5. The coordinates of the origin or point O is (0,0) as it is at zero distance from both the x-axis and y-axis.

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