Answer:

Some examples of linear equations are : 2x + 3y = 4, x + 2 = 0, 5x + 2y - 3z = 1
In a linear equation the degree of symbols such as x, y and z is 1.

Equations containing terms involving degrees other than 1, for example x² , y³ , 1 / x are non-linear.

The graph of an equation such as 2x + 3y = 4 is a straight line. For this reason it is said to be a linear equation.