also requires one to understand tangent lines, concavity, the second derivative, and optimization.
The key to finding derivatives from looking at a graph is by looking at the order of the exponent in a function. Since we are deriving, always moving one step down, and because we know how to use the power rule, we know that whatever the order of the exponent, the function will be one less exponent # down. For example:
Other ways of finding derivatives from a graph include using tangent/secant lines and evaluating based on concavity. Learn how to do that here.