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Checkpoint Quadratic Inequalities 1

I.  For # 1  4, indicate for which values of x the output (y value) is

a)     positive;

b)     negative.

Be sure to use interval notation.

1.                                                                          2.   

3.                                                                                                                                                                  4. 

5.  Explain what a test number is and why we can get away with using only one test number per interval.

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