This relationship described between the price and the quantity demanded is known as the Price Elasticity of Demand (PED).
When the PED is less than 1, it means that a change in price doesn't affect the quantity demanded as much. When it is more than 1, a change in price will lead to an even higher change in quantity demanded.
In conclusion, this is the Price Elasticity of Demand.
Find out more on PED at https://brainly.com/question/9235198.