How do I graph these equations? I know what they're suppose to look like but I don't know what I'm suppose to do (with the absolute values).

y= x^2 - 4|x| + 3

and

y=|x^2 - 4|x| + 3|

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- Aug 26th 2008, 04:19 PMmcsquaredGraphing functions that have absolute values
How do I graph these equations? I know what they're suppose to look like but I don't know what I'm suppose to do (with the absolute values).

y= x^2 - 4|x| + 3

and

y=|x^2 - 4|x| + 3| - Aug 26th 2008, 04:33 PMJhevon
ok, you seem to know how to graph quadratics, so i won't address that. here is how you deal with the absolute values.

recall the definition of absolute value:

hence, you have to graph your function piece-wise. note that

so on the interval you should graph the top function, while on the interval you should graph the bottom function

Quote:

and

y=|x^2 - 4|x| + 3|

- Aug 26th 2008, 05:10 PMmcsquared
I think I get it now. Thanks a lot. :)