Free graphing calculator instantly graphs your math problems.

Feb 14, 2026 · A function is a relation that uniquely associates members of one set with members of another set. More formally, a function from A to B is an object f such that every a in A is uniquely …

Algebra Basics: What Are Functions? - Math Antics. Learn More at mathantics.comVisit http://www.mathantics.com for more Free math videos and additional subscription based content!

A function is like a machine that takes an input and gives an output. Let's explore how we can graph, analyze, and create different types of functions.

Here, the function takes the input x, multiplies it by three, then gives that out as the output. The function could do almost any calculation you like, but we have chosen a simple one for clarity.

On a graph, the vertical line test can be used to determine whether or not a curve is a function. There is also the horizontal line test, which determines whether or not a funcntion is one-to-one.

Definition: A function is a relation from a domain set to a range set, where each element of the domain set is related to exactly one element of the range set.

The world's largest collection of formulas and graphics about more than 300,000 mathematical functions for the mathematics and science communities.

Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.

This video will explain in detail the foundation of what a function is in algebra to include how to evaluate a function and what the domain and range represent with respect to functions.