What is first degree equation?

A first-degree equation, also known as a linear equation, is an algebraic equation in which the highest power of the variable is one. It can typically be expressed in the form ( ax + b = 0 ), where ( a ) and ( b ) are constants, and ( x ) is the variable. The graph of a first-degree equation is a straight line, and it represents a constant rate of change between the variable and the constant terms. Examples include equations like ( 2x + 3 = 7 ) or ( y = 4x - 5 ).