# Linear Equations in Two Variables class 9 Notes Mathematics

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## CBSE Guide Linear Equations in Two Variables class 9 Notes

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## 9 Mathematics notes Chapter 4 Linear Equations in Two Variables

Download CBSE class 9th revision notes for Chapter 4 Linear Equations in Two Variables in PDF format for free. Download revision notes for Linear Equations in Two Variables class 9 Notes and score high in exams. These are the Linear Equations in Two Variables class 9 Notes prepared by team of expert teachers. The revision notes help you revise the whole chapter in minutes. Revising notes in exam days is on of the best tips recommended by teachers during exam days.

CBSE Class 09 Mathematics
Revision Notes
CHAPTER – 4
LINEAR EQUATIONS IN TWO VARIABLES

1. Linear Equations
2. Solution of a Linear Equation
3. Graph of a Linear Equation in Two Variables
4. Equations of Lines Parallel to x-axis and y-axis
• 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.
• A pair of values of x and y which satisfy the equation $ax + by + c = 0$ is called a solution of the equation.
• A linear equation in two variables has infinitely many solutions.
• The graph of every linear equation in two variables is a straight line.
• y = 0 is the equation of x-axis and x = 0 is equation of y-axis.
• The graph of $x = a$ is a straight line parallel to the y-axis.
• The graph of y = a is a straight line parallel to the x-axis.
• An equation of the type y = mx represent a line passing through the origin.
• Every point on the graph of a linear equation in two variables is a solution of the equation. Conversely, every solution of the linear equation in two variables represents a point on the graph of the equation.

## Linear Equations in Two Variables class 9 Notes

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## CBSE Class-9 Revision Notes and Key Points

Linear Equations in Two Variables class 9 Notes. CBSE quick revision note for Class-9 Mathematics, Chemistry, Maths, Biology and other subject are very helpful to revise the whole syllabus during exam days. The revision notes covers all important formulas and concepts given in the chapter. Even if you wish to have an overview of a chapter, quick revision notes are here to do if for you. These notes will certainly save your time during stressful exam days.

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