RD Sharma Solutions for Class 10 Chapter 3 “Pair of Linear Equation in Two Variable”- An equation in the form of ax+by+c, where a,b and c are real numbers and a,b are not equal to zero, is called a linear equation in two variables. Linear equations in two variables, explain the geometry of lines or the graph of two lines, plotted to solve the given equations. An equation is said to be linear equation in two variables if it is written in the form of ax + by + c=0, where a, b & c are real numbers and the coefficients of x and y, i.e. a and b respectively, are not equal to zero. Let’s see some of the concepts discussed in this chapter: