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 ...

Uber has created more than a booming ride-sharing market. It’s given economists a treasure trove of data to understand one of the fundamental concepts of economics: the demand curve. Steven Levitt, ...

Get the latest news and market analysis from our in-house experts. Real GDP shows the value of an economy’s output, adjusted for any changes in inflation, interest rates or other factors which could ...