Some important points to revise from the chapter are: • 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 ...

CBSE Class 9 Maths extra questions and answers for Chapter 4 - Linear Equations In Two Variables can are entirely based on the important concepts given in the NCERT book. Therefore these questions are ...

NCERT Book for Class 9 Maths: The latest NCERT Class 9 Mathematics Book for the 2025–26 academic session is now available for download in chapter-wise PDF format, in both English and Hindi medium.