What is an algebraic relationship whose graph is a line?

An algebraic relationship whose graph is a line is typically expressed in the form of a linear equation, such as ( y = mx + b ), where ( m ) represents the slope of the line and ( b ) is the y-intercept. This equation indicates a constant rate of change, meaning that for every unit increase in ( x ), ( y ) changes by a fixed amount ( m ). The graph of this relationship will always produce a straight line in the Cartesian coordinate system.