The consumer preference can be also presented graphically in the form of curves of indifference. Curves of indifference are shown by the sets of consumer couples possessing equal usefulness for the consumer and a choice among which is useless for the consumer.
is an, or a, to a ( and ( and . of a , a as a or. - a a and, and bezyoyom - on them the and of a do not or to a do not the friend of a,
Demand and - a, where demand (), and - , (); to a in, an in the urovena of the prices of a.