A linear equation is an algebraic expression that includes variables with exponents of 1. All equations that follow this rule are named linear. Examples of linear equations are
[tex]\begin{gathered} y+x=4 \\ 3x-5y=8 \\ \frac{4}{3}x+y=\frac{5}{2} \end{gathered}[/tex]Notice that each variable has an exponent of 1, that's why these equations are linear.
