Definition of dray. : a vehicle used to haul goods; especially : a strong cart or wagon without sides.
The main difference between an equation and a function is the fact that an equation usually deals with a single input, whereas, a function can have numerous inputs. In mathematics, an equation is used to denote the equality between two expressions.
Infinite Solutions. In mathematics, we often come across with equations and expressions. An equation is an expression with an equal sign somewhere in between. Just to recall that an expression is made up of variables and constant terms conjoined together by the means of algebraic operators.