Rectangular Coordinates

FIU has online movies to help with this topic on this page. You must have QuickTime Player, a free download, installed on your computer.

For a slower progression through the concepts of rectangular coordinates you may watch the following movies:

Plotting ordered pairs is movie 3.2 on this page.

The Distance Formula is movie 3.24 on this page.
The Midpoint Formula is movie 3.3 on this page.

 

The University of Idaho provides another online resource.  These lectures are only viewable by those with DSL or cable modems.  Real Player, a free download, is required to see these videos.  The videos cover the topics below. To see the videos, go to this page and look under section 2.1.
Plotting ordered pairs

The Distance Formula
The Midpoint Formula

 

More online help:

Plotting ordered pairs

The Distance Formula

The Midpoint Formula