To solve a function for a given value, plug that value into the function and simplify. See this first-hand by watching this tutorial!

Keywords:

problem

function

linear equation

linear function

linear

plug in

evaluate function

evaluate

function value

function input

output

Background Tutorials

Understand that a function from one set (called the domain) to another set (called the range) assigns to each element of the domain exactly one element of the range. If f is a function and x is an element of its domain, then f(x) denotes the output of f corresponding to the input x. The graph of f is the graph of the equation y = f(x).

Every see 'f(x)' in your math? That's function notation! It's a way to indicate that an equation is a function. Learn about function notation by watching this tutorial.

Further Exploration

Use function notation, evaluate functions for inputs in their domains, and interpret statements that use function notation in terms of a context.

Word problems are a great way to see math in action! This word problem deals with calculating profit after a certain number of years. See how to use a function from the word problem to solve!