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CBSE Class 9 Answered

how can we find solution of a linear equation in tow variables?
Asked by Pratik Sharma | 15 May, 2013, 01:14: PM
answered-by-expert Expert Answer
There are many ways of finding a solution of linear equation in 2 variables 
 
1. By substitution - You can explicitly find the value of one variable in terms of another and then plug it into another equation. 
2. By elimination - You can multiply both the equations with different numbers, such that the coefficient of either of the 2 variables becomes same and now you can subtract the 2 equations. 
3. You can also use a matrix to solve the linear equation
4. Graphical method - you can plot the 2 equations on a graph and read the point where they intersect. 
Answered by | 15 May, 2013, 07:29: PM

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CBSE 9 - Maths
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CBSE 9 - Maths
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