4. Linear Equations in Two Variables
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Description:
Download NCERT Solutions Class 9th Maths Chapter 4 Linear Equations in Two Variables
Recall of linear equations in one variable. Introduction to the equation in two
variables.
Focus on linear equations of the type ax+by+c=0. Prove that a linear equation in two variables has infnitely many solutions and justify their being written as ordered pairs of real numbers, plotting them and showing that they lie on a line. Graph of linear equations in two variables. Examples, problems from real life, including problems on Ratio and Proportion and with algebraic and graphical solutions being done simultaneously
