Class IX Mathematics
Chapter 4: Linear Equations in Two Variables
Standard NCERT & CBSE aligned study curriculum. Master concepts, track accuracy, revise weak areas, and challenge yourself with 9 customized practice modes.
Syllabus Sections
Key Formulas & Equations
Click Copy to duplicateStandard Form 2-Variable
ax + by + c = 0
Standard form for linear systems with variables x and y.
Related Formulas from Adjacent Chapters
Origin coordinates
O = (0, 0)
[From Coordinate Geometry] Intersection point of horizontal and vertical axis lines.
Euclid Axiom 1
A = B \land B = C \Rightarrow A = C
[From Introduction to Euclid's Geometry] Things which are equal to the same thing are equal to each other.