The Bill of Rights. In 1789, Madison, then a member of the newly established U.S. House of Representatives, introduced 19 amendments to the Constitution. On September 25, 1789, Congress adopted 12 of the amendments and sent them to the states for ratification. Ten of these amendments, known collectively as the Bill of Rights, were ratified and became part of the Constitution on December 10, 1791.
If demand is inelastic, we know that the increase in price will cause quantity demanded to fall just a little. When price goes up, quantity demanded goes down, but not by much. To be precise, when demand is inelastic, the percentage change in quantity demanded is smaller than the percentage change in price.f price goes up and quantity remains unchanged, total revenue will rise. But the second effect is that quantity in fact will not remain unchanged. When price goes up, the quantity demanded (and therefore the quantity sold) goes down. And by itself, the lower quantity causes total revenue to go down.
If an increase in price causes an increase in total revenue, then the demand is inelastic. Just like baby formula or milk, the increase in price does not have a large impact on the quantity demanded. On the contrary, if an increase in price causes a decrease in total revenue, then the demand can be said to be elastic.