Consider a demand function: Q = α P^β, where Q is the quantity demanded, α is a shifting parameter, P is the price of the good, and the parameter β is less than zero for a downward-sloping demand curve. You can transform the data into a ______ model to achieve linearity.

Explanation: If you take the natural log of both sides, you get: lnQ = lnα + β lnP, where you can treat lnα as the intercept.