The other extreme is a vertical demand curve that indicates an item is perfectly inelastic. These items are necessary and have no substitutes; for example, a life-saving drug that people will pay ...

The demand curve for a perfectly inelastic good is depicted as a vertical line in graphical presentations because the quantity demanded is the same at any price.

The demand curve is plotted on a graph with price labeled on the y-axis and quantity labeled on the x-axis. ... An elasticity equal to zero is said to be perfectly inelastic, ...

Inelastic goods may include items such as tobacco and prescription drugs, as demand often remains constant despite price changes. Elasticity of Demand The elasticity of demand measures how demand ...

A score between 0 and 1 is considered inelastic, since variation in price has only a small impact on demand.A product with an ...