Define a Variable and a System of Linear Inequalities Solution Linear equations are equations where all exponents of variables are 1 or 0 (meaning there is no variable). Linear inequalities are a system of equations where all the variables exponents are 1 or 0 (no variable) Here is an example of a linear equation: 2y+5x=3 Here is an example of a system of linear inequalities: 2y+3>3x x>y-2.