Introduction to Absolute Value

In Highschool and College, absolutes values are so commonly seen. That is why it is important to understand what it is about.

First, what does an absolute value look like?
Something like this:







Yea. So, in order to make the most out of what's next, please make sure you have at least an elementary understanding of functions, algebra...Otherwise, you might end up being confused and thats the last thing I want to happen.


So. The 'X' has a value...It could be anything...6,4,435,43,-45,435,43,5. Doesn't really matter.
So, now you might ask, What on earth are those two vertical lines for, surrounding the X?

I'm glad you asked. What the two lines do are they basically make sure the value of X is ALWAYS POSITIVE

If your going to take out anything from this lesson, its what I just highlighted!!!!

Basically, if X=-2, the two lines will make X=2
If X=-5464564, the X will it positive whatever I just typed.
.....
That's probably even easier than addition...

Next time, we'll try to map the absolute functions on a graph.