Try this Chapter 6 online self-test from your book.
CHAPTER 6 - QUADRATRICS
Here's a nice little story about imaginary numbers!
Click here and then on Quadratic Equations for practice on many of our topics from Chapter 6.  Here's a link for some quadratic regression problems.
Here's an excellent site by another book company.  Their Chapter 6 is very similar to ours, so try any of the 5 question self-tests for any of the sections listed under Chapter 6.
Try this link for some practice with graphing parabolas. And click here for some extra help.
There's lots of online applets to experiment with graphs of parabolas . . . here's one . . and here's another . . and another . . .and another . . .and another. . .
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