First-Degree Equation

First-Degree Equation

An equation in which the highest power of the unknown or of the variables is 1.

Synonym for linear equation.


  • The equation 15x – 7 = 0 is a first-degree equation with one unknown.
  • The equation 15x – 7y = 0 is a first-degree equation in two variables.
  • The equation 2xy = –8 is not a first-degree equation, because it contains a product of variables; therefore, the degree of the expression is greater than 1.

Try Buzzmath activities for free

and see how the platform can help you.