Download the latest CBSE Class 9 Mathematics Linear Equations In Two Variables Notes Set A in PDF format. These Class 9 Mathematics revision notes are carefully designed by expert teachers to align with the 2025-26 syllabus. These notes are great daily learning and last minute exam preparation and they simplify complex topics and highlight important definitions for Class 9 students.
Chapter-wise Revision Notes for Class 9 Mathematics Chapter 4 Linear Equations In Two Variables
To secure a higher rank, students should use these Class 9 Mathematics Chapter 4 Linear Equations In Two Variables notes for quick learning of important concepts. These exam-oriented summaries focus on difficult topics and high-weightage sections helpful in school tests and final examinations.
Chapter 4 Linear Equations In Two Variables Revision Notes for Class 9 Mathematics
Chapter 4
Linear Equations in Two Variables
Chapter Notes
Top Definitions
1. An equation of the form ax + by + c = 0, where a, b and c are real numbers, such that a and b are not both zero, is called a linear equation in two variables.
2. A linear equation in two variables is represented geometrically by a straight line the points of which make up the collection of solutions of equation. This is called the graph of the linear equation.
Top Concepts
1. A linear equation in two variables has infinitely many solutions.
2. The graph of every linear equation in two variables is a straight line.
3. x = 0 is the equation of the y – axis and y = 0 is the equation of the x–axis.
4. The graph of x = k is a straight line parallel to the y –axis.
5. The graph of y = k is a straight line parallel to the x – axis.
6. An equation of the type y = mx represents a line passing through the origin, where m is a real number.
7. Every point on the line satisfies the equation of the line and every solution of the equation is a point on the line.
8. The solution of a linear equation is not effected when:
(i) The same number is added or subtracted from both the side of an equation.
(ii) Multiplying or dividing both the sides of the equation by the same non zero number.
Please click the link below to download pdf file for CBSE Class 9 Concepts for Linear Equations in Two Variables.
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CBSE Class 9 Mathematics Chapter 4 Linear Equations In Two Variables Notes
We hope you liked the above notes for topic Chapter 4 Linear Equations In Two Variables which has been designed as per the latest syllabus for Class 9 Mathematics released by CBSE. Students of Class 9 should download and practice the above notes for Class 9 Mathematics regularly. All revision notes have been designed for Mathematics by referring to the most important topics which the students should learn to get better marks in examinations. Our team of expert teachers have referred to the NCERT book for Class 9 Mathematics to design the Mathematics Class 9 notes. After reading the notes which have been developed as per the latest books also refer to the NCERT solutions for Class 9 Mathematics provided by our teachers. We have also provided a lot of MCQ questions for Class 9 Mathematics in the notes so that you can learn the concepts and also solve questions relating to the topics. We have also provided a lot of Worksheets for Class 9 Mathematics which you can use to further make yourself stronger in Mathematics.
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