1.

Explain linear equations in two variables.

Answer»

When an equation is having two variables with every variable in first degree such that variables are not multiplied with each other then it is called as a linear equation in two variables.

In generalized form it can be written asax+by = cwhere a, b, c are constants and x, y are variables.

For eg: 5x+3y = 7

values of x and y can’t be evaluated with the help of this single equation. That’s why we always call for the linear system with two variables because there must be two equations in same variables to get a solution otherwise the value of the one variable will be in terms of another variable.

So, to solve linear equations with two variables a number of methods are available


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