Virtual Nerd: How Is a Function Defined?

A function means that every element of the domain is paired with exactly one element in the range. The teacher illustrates this by using a table for the given set of numbers.

A function means that every element of the domain is paired with exactly one element in the range. The teacher illustrates this by using a table for the given set of numbers.

To graph a function, you first need a table of values to fit your equation. This video will demonstrate how to make a table and then plot those values to make a graph. [3:23]

Learn how to indicate that an equation is a function by watching this tutorial. [0:58]

To graph a linear equation, you first need to make a table of values to plot. This tutorial will teach you how to set up this table of values using an example. [5:41]

Verifying that a point is part of the equation of a line is very simple! Follow the steps in this quick tutorial to learn how! [1:35]

The intersection of two inequalities is what they have in common. This tutorial shows you how to graph two inequalities on the same number line and then find the intersection. [2:40]

This tutorial demonstrates how to solve a multi-step equation for a variable. A step by step process is given with examples. [3:45]

This tutorial will teach you how to graph the union of two inequalities using a number line. [2:06]

This tutorial will demonstrate how to graph an inequality and an infinite set on a number line. Closed and open circles are discussed using specific examples. [3:37]