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# Linear Equation in Two Variables Class 9 Maths Formulas

Hey, students are you looking for Linear Equation in Two Variables Class 9 Maths Formulas? If yes. Then you are at the right place. In this post, I have listed all the formulas of Linear Equation in Two Variables class 9 that you can use to learn and understand the concepts easily.

If you want to improve your class 9 Math, Linear Equation in Two Variables concepts, then it is super important for you to learn and understand all the formulas.

By using these formulas you will learn about the Linear Equation in Two Variables.

With the help of these formulas, you can revise the entire chapter easily.

## Linear Equation in Two Variables Class 9 Maths Formulas

• Equation: An equation is a mathematical statement that two things are equal. It consists of two expressions one on each side of an equals sign. For example,7x + 9 = 0
• An equation in a statement of an equality containing one or more variables. 7x + 3y = 10
• Linear equation in one variable: A linear equation or first degree equation, in the single variable x is an equation that can be written in the form ax + b = 0 where a, and b are equal numbers, when a≠0.
• Solution of a linear equation: The value of the variable which when substituted in place of variable makes both sides of the given equation equal, is called the solution of given equation. These values of variables is also known as root of the equation.
• Linear equation in two variables: A linear equation in two variables is a first degree equation which can be written in the form ax + by + c – 0 and a, b both are non-zero real number. Where a, b and c are real numbers. Examples: 3x + 2y – 9 = 0 and 7x – 4y + 6 = 0
• Graph of a Linear Equation in two Variables Graph of a linear equation in two variables is a straight line. Type of Graphs corresponding to the type of equation

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