Sagot :
A linear equation is an equation for a straight line
or
A linear equation is an algebratic equation in which each term is either a constant or the product of a constant and (the first power of) a single variable
or
A linear equation is an algebratic equation in which each term is either a constant or the product of a constant and (the first power of) a single variable
An equation between two variables that gives a straight line when plotted on a graph