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Learn how to find the value of a function for a given input value.
Functions assign a single unique output for each of their inputs. In this video, Sal gives many examples of various kinds of functions.
Sal evaluates f(x)=49-x^2 at x=5.
Sal evaluates a function at x=-1 using the graph of that function.
Evaluate functions at a specific input value, given either the functions' formula or their graph.
Sal evaluates -2*f(-6)+g(1) given the graphs of f and g.
Evaluate expressions that contain function notation, given the functions' graphs.