How do you sketch the graph of a strange function you’ve never seen before… but looks familiar? Use transformations! Start with something you do know (in this case the line y=x) and work your way up. Just make sure you know what absolute values and slopes are and you’re all set.
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This video was pretty good, but it seemed to drag on for a while. I think it could have been cut down a lot. Also, I think another way to look at it is to make a table and plug in numbers to see what actually happens at a certain "x".
I also think this pencast seemed to drag a little, but there is definitely thoroughness to the explanation of what you do and why you do it in order to come up with the correct answer. I think someone who was looking for instruction on how to correctly answer this type of problem would find this very helpful, but someone who is looking for a quick review or who already knows how to do this type of problem would find this pencast slow moving.