Key Concept

  • A Linear Equation is an equation of straight line. It is in the form of ax + by + c = 0  ,where a, b and c are the real numbers (a≠0 and b≠0) and x and y are the two variables, Here a and b are the coefficients and c is the constant of the equation.
  • Pair of Linear Equations:Two Linear Equations having two same variables are known as the pair of Linear Equations in two variables.
      • a1x + b1y + c1 = 0
      • a2x + b2y + c2 = 0

  • Algebraic Methods of Solving a Pair of Linear Equations:
    • Cross multiplication method: Given two equations in the form of a1x + b1y + c1 = 0 and a2x + b2y + c2 = 0, where

Mock Test