04:21 duration 4 minutes 21 seconds
Vertical Line Test
This demonstrates why and how to use vertical lines to test whether a graph of any relation is a function or not.
03:45 duration 3 minutes 45 seconds
Identifying functions from relations
Discussion of what relations and functions are and then some exapmles of how to indentify if a particular relation is more specifically a function.
02:13 duration 2 minutes 13 seconds
Graphing a linear inequality on the number line
A demonstration of number line graphs. There are two examples in the vi deo, but when you do the questions in ALEKS you'll only have to do one.