If demand is relatively elastic and supply is relatively inelastic, who would we expect to bare most of the cost of a tax?.

A curve showing various combinations of two products a consumer can purchase with a specific amount of income.

Explanation:

Budget Line is a term or form of indication of consumer's budget constraints, which is used to describe several combinations of two commodities a consumer can buy considering both the prices of these commodities and a certain amount of income available to the consumer over a given period.

Hence, in this case, Budget Line can be best described as "a curve showing various combinations of two products a consumer can purchase with a specific amount of income."