Linear Equations in two Variables

If the equation has more than one variable and the highest power of variable, appearing in the equation is 1, such that variables are not multiplied each other then this type of equation is known as “linear equation in two variable”.

Some examples of linear equations in two variables are,

                      (a)  2x  + y = 12 

                      (b)  3a – 9b = 0, 

                      (c)  5y + 3x = 65,

                      (d)  x/2 + y/3 = 6

                      (e)  m – n = 3

                      (f)  9p – 2q = 25

                      (g)  6r + 2s = 4r + 3

                      (h) 4s/3 = 3t/2

  These all are linear equations in two variables.