### Other Chapters For 9th

• 9th-class science Chapter 40

Waste – any substance which is discarded after primary use, or it is worthless, defective and...
• 9th-class science Chapter 39

India is the second most populous country in the world and has a changing...
• 9th-class science Chapter 38

HIV or Human immunodeficiency Virus causes AIDS or Acquired Immunodeficiency Syndrome. This...
• 9th-class science Chapter 37

It is a well-known fact that cell is the fundamental unit of living beings and there is...
• 9th-class science Chapter 36

The science and practice of maintaining good health is known as hygiene. Disease Carriers are...
• 9th-class science Chapter 35

Inhalation and exhalation are involuntary activities in a human body and the respiratory...
• 9th-class Science Chapter 34

The skin is the largest organ of the body, with a total area of about 2 square metres. The...
• 9th-class Science Chapter 33

Locomotion – Locomotion is the movement of an organism from one place to another, aided by the...
• 9th-class Science Chapter 32

Digestion is the breakdown of large insoluble food molecules into small water-soluble food...
• 9th-class Science Chapter 31

Nutrients are substances that provide nourishment essential for the maintenance of life and...

# 9th Class Chapter No 23 - Graphical Solution in maths for ICSE

Graphical Method – When two lines are parallel

• If the straight line represented by two linear equations are parallel to each other, then
• Such a system of equations is called inconsistent, or the system has no solution
• The two equations y = x + 4; y = x + 1 has no solution as they do not intersect each other

Graphical Method – When the lines coinside

• If the straight lines represented by two linear equations are coincident to each other, then
• Such a system of equations is called dependent or consistent, or the system has infinite solutions
• The two equations 2x + 3y = 64; 4x +6y =12 have infinite solutions as they coincide.
Posted in 9th on July 08 2020 at 10:15 PM

### ICSE 9th CLASS maths OTHER CHAPTERS

• 9th-class maths Chapter 24

Any point on the coordinate axes can be denoted by a pair of numbers, called the coordinates...
• 9th-class maths Chapter 22

In linear equation of the form :  3x + y = 5, x – 3y + 8 = 0, x = 5y – 8 etc.  The letters ‘x’...
• 9th-class maths Chapter 21

The trigonometric ratios of some special angles, i.e., 0°, 30°, 45°, 60° and 90° follow a...
• 9th-class maths Chapter 20

Cuboid It is a rectangular solid with six faces each of which is rectangular in...
• 9th-class maths Chapter 19

Area and perimeter of a triangle Perimeter of a triangle = Sum of all sides of the...
• 9th-class Maths Chapter 18

The mean, median, and mode are known as the measures of central tendency.   Mean of...
• 9th-class Maths Chapter 17

Data Primary data Primary data is that which is collected by the investigator himself...
• 9th-class Maths Chapter 16

Chord Properties Of Circles  1. A circle is a locus of a point which moves in a plane in such...
• 9th-class Maths Chapter 15

Polygon Area of a plane figure is the measure of the region enclosed by it The area of any...
• 9th-class Maths Chapter 14

Construction of 60°,  120° Draw a line OA With O as a center, draw an arc to cut OA at...