variation

var*i*a*tion

noun

{bc}the act or process of varying {bc}the state or fact of being {a_link|varied}

direct variation

noun

{bc}mathematical relationship between two variables that can be expressed by an equation in which one variable is equal to a constant times the other

inverse variation

noun

{bc}mathematical relationship between two variables which can be expressed by an equation in which the product of two variables is equal to a constant