If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Graphs of logarithmic functions

Sal is given a graph of a logarithmic function with four possible formulas, and finds the appropriate one. Created by Sal Khan.

Video transcript