What's a Function?

What's a Function?

Note:

Function rules are like instructions on how to change input values into their respective output values. In this tutorial, see how to write a function rule for a given relation. Check it out!

Keywords:

  • Problem
  • Function
  • Table
  • Function rule
  • Write function
  • Write function rule

Background Tutorials

  • Evaluate functions, expressed in function notation, given one or more elements in their domains

      • How Do You Find f(x) If You Have a Value For x?How Do You Find f(x) If You Have a Value For x?

      How Do You Find f(x) If You Have a Value For x?

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

      • What is Function Notation?What is Function Notation?

      What is Function Notation?

      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.

  • Determine the slope of a line given a table of values, a graph, two points on the line, and an equation written in various forms, including y = mx + b, ax + by = c, and y - y1 = m(x - x1)

      • What's a Function?What's a Function?

      What's a Function?

      You can't go through algebra without learning about functions. This tutorial shows you a great approach to thinking about functions! Learn the definition of a function and see the different ways functions can be represented. Take a look!