# Linear Equations in Two Variables Class 9 Notes

# Chapter 4 Linear Equations in Two Variables

In this chapter, linear equations with two variables are written as ax + by + c=0. where a, b, and c are real numbers and x and y are non-zero. It is a simple subject and students can do well on the exam. Vidyakul’s notes for NCERT Class 9 Maths Chapter 4 contain the most comprehensive, reliable, and up-to-date information from expert faculty members. For this reason, Vidyakul has prepared NCERT Class 9 Math Chapter 4 notes. The NCERT Math Lesson 9 Chapter 4 notes available on the Vidyakul website and app are very simple and intuitive.

If you want to score the highest on the exam, don't skip Chapter 4 Math Grade 9. It is recorded that at least two or three questions are asked in this chapter each year. Therefore, it is recommended that all students begin their Year 9 Math Chapter 4 practice using the NCERT notes for Year 9 Math Chapter 4 provided by Vidyakul.

### MATHEMATICS NOTES CLASS 9th CH-4

### Points to Remember

We have provided some important points that are covered in NCERT Class 9 Maths Chapter 4 to help students in their exam preparations. Refer to the list below:

A formula of the form ax+by+c=0,ax+by+c=0 A linear equation in two variables is one in which a, b, ca, b, c are real numbers such that aa and bb are not zero.

A linear equation with two variables has an infinite number of solutions.

A straight line is the graph of a linear equation with two variables.

The xx-axis and yy-axes equations are y=0y=0 and x=0x=0, respectively.

Every point on the graph of a two-variable linear equation is a solution to the equation. In contrast, every solution of a linear equation in two variables represents a point on the equation’s graph.

### Topics and Sub-topics

The best way to use the NCERT notes is first to address the problem yourself. If you can't find an answer or don't understand how to fix a problem, check out these NCERTnotes to see how our experts can fix it. After studying these NCERT notes, you will understand how to effectively address questions and get the right answers. Before delving into Chapter 4, let's review the topic by section students will study in this chapter.

The topics covered under Chapter 4 Maths Class 9 are given below:

A formula of the form ax+by+c=0,ax+by+c=0 A linear equation in two variables is one in which a, b, ca, b, c are real numbers such that aa and bb are not zero.

A linear equation with two variables has an infinite number of solutions.

A straight line is the graph of a linear equation with two variables.

The xx-axis and yy-axes equations are y=0y=0 and x=0x=0, respectively.

Every point on the graph of a two-variable linear equation is a solution to the equation. In contrast, every solution of a linear equation in two variables represents a point on the equation’s graph.

Learn how to solve such equations in

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