In this lesson I will introduce you to functions and relations. You will here the the word “function” over and over in algebra and it’s so important that you understand what makes a function a function. Functions and relations are nothing more than a collection of points. The points that I’m talking about are points on the x-y plane where points are expressed as an ordered pair (x, y). So for example, (1, 3) is a point and { (1, 3), (4, 9), (-8, 0) } would be a collection (set) of points. This lesson is pretty long as I go into a lot of detail about the basics of relations and functions. I can’t stress how important it is to take good notes and practice as much as you can. Good luck!