Discreteness of amounts

If a article is awash in accomplished units, and these are abundant for a consumer, again the alone appeal ambit can hardly be approximated by a connected curve. It is a set action of the price, authentic by a amount aloft which no assemblage is bought, a amount ambit for which one is bought, etc.

edit Units of measurement

If the bounded bill is dollars, for example, again the units of altitude of the capricious "price" are "dollars per assemblage of the good" and the units of altitude of "quantity" are "units of the acceptable per time (e.g., per anniversary or per year). Thus abundance accepted is a breeze variable.