Linear Equations in Two Variables — Syllabus
Maharashtra Board · Class 10 · Mathematics
What Linear Equations in Two Variables covers in Maharashtra Board Class 10 Mathematics: 4 topics, for the 2026-27 session.
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Topics in Linear Equations in Two Variables
1. Linear equations in two variables
- An equation which contains two variables and the degree of each term containing variable is one, is called a linear equation in two variables.
- The general form is ax + by + c = 0, where a, b, c are real numbers and a, b are not both zero simultaneously.
- Either a or b can be zero, but not both together. For example, y = 2 can be written as 0x + y = 2.
2. Graph of a linear equation in two variables
- The graph of a linear equation in two variables is a straight line.
- An ordered pair satisfying the equation represents a point on that line.
- Two points are sufficient to represent a line, but if the coordinates of one point are wrong, the line will be incorrect.
3. Simultaneous equations and graphical method
- When we think about two linear equations in two variables at the same time, they are called simultaneous equations.
- The solution of a pair of simultaneous equations is the ordered pair that satisfies both equations.
- For x + y = 4 and 2x - y = 2, the graphs intersect at (2, 2).
4. Elimination method revision from the example
- For x + y = 4 and 2x - y = 2, adding the equations removes y.
- After adding, 3x = 6, so x = 2.
- Substitute x = 2 into x + y = 4 to get y = 2.
Key Concepts
Central concept: A linear equation in two variables and the methods used to represent, solve, and reduce related equations
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