# Evaluating functions

3 videos
3 skills
Learn how to find the value of a function for a given input value.

### How to evaluate a function given its formula (example)

VIDEO 0:59 minutes
Sal evaluates f(x)=49-x^2 at x=5.

### Evaluate functions from their formula

PRACTICE PROBLEMS
Evaluate functions for specific inputs given the formula of the function.

### How to evaluate a function given its graph (example)

VIDEO 0:44 minutes
Sal evaluates a function at x=-1 using the graph of that function.

### Evaluate functions from their graph

PRACTICE PROBLEMS
Evaluate functions for specific inputs given the graph of the function.

### How to evaluate an expression that contains function notation (example)

VIDEO 1:23 minutes
Sal evaluates -2*f(-6)+g(1) given the graphs of f and g.

### Evaluate function expressions

PRACTICE PROBLEMS
Evaluate expressions that contain function notation, given the functions' graphs.