03 Jun Class 9 - Linear equations in two variables, Math - Class 9 | NCERTClass 9 math tutorials, geometric representation of a linear equation, graph of a linear equation, linear equations, linear equations in two variables, math, mathemafia, mathematics, NCERT, solution of a linear equation Example 9: Solve the equation 2x + 1 = x – 3, and represent the solution(s) on(i) the number line,(ii) the Cartesian plane. Example 8 Class 9 - Home In this video, linear Equations, variables, constants are explained in detail with example and demonstration by plotting solutions on graph. This video is intended for class 9 and class 10 students.