Tuesday, September 27, 2011

9-27 Class notes

Homework for 9-28:  page 32; items 1b, 3d, 4e, 5a

Procedure for solving equations and inequalities containing absolute value expressions:

Isolate the absolute value expression, the portion with the vertical bars.

Remove the absolute value bars by splitting the equation or inequality into two cases,
the original statemetn and its opposite.  Remember that when you generate the opposite of an inequality, hte direction of the > or < symbol changes.

Solve the two cases.  A graph of the solution combines the graphs of the two cases.  There could be open dots or closed dots.  There could be a segment of the number line or two split segments of the number line.

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