A linear demand curve is a line representing the relationship between the demand for a product or service and its price. Everyone knows that sales are proportional to price: The more you charge for an ...

In economics, a demand curve represents the relationship between the quantity of a product demanded and its price. It is almost always downward-sloping, as more people are willing to buy the product ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Dr. JeFreda R. Brown is a financial ...