sandalwood Posted February 8, 2013 Share Posted February 8, 2013 Does anyone have any websites bookmarked about inequalities (changing the sign, etc.) in Algebra? Khan Acad. was not much help to us the other day but I might not have searched right on there. Tips? Thanks! Quote Link to comment Share on other sites More sharing options...
regentrude Posted February 8, 2013 Share Posted February 8, 2013 No website - but what exactly is the problem? There is really only one rule to remember: flip the > or < symbol if you multiply/divide by a negative. Everything else works like it does with equations. Quote Link to comment Share on other sites More sharing options...
Dana Posted February 8, 2013 Share Posted February 8, 2013 I agree with regentrude. Purplemath is also a good site with some examples and explanations. She's started adding more ads in, so I like that less, but her explanations are generally good. Quote Link to comment Share on other sites More sharing options...
wapiti Posted February 9, 2013 Share Posted February 9, 2013 FWIW, here are some videos: Basics of Inequalities Part 1* Basics of Inequalities Part 2* Solving Linear Inequalities* Interval Notation An Inequality Word Problem* Graphing Linear Inequalities Quote Link to comment Share on other sites More sharing options...
sandalwood Posted February 9, 2013 Author Share Posted February 9, 2013 FWIW, here are some videos: Basics of Inequalities Part 1* Basics of Inequalities Part 2* Solving Linear Inequalities* Interval Notation An Inequality Word Problem* Graphing Linear Inequalities These sites are awesome, love the AOP one. Didn't know about that one --- most helpful, thanks :) Purplemathis also a good site with some examples and explanations thanks :) No website - but what exactly is the problem? There is really only one rule to remember: flip the > or < symbol if you multiply/divide by a negative. Everything else works like it does with equations. --no problem --- he just needs lot of practice and is forgetting to flip the sign. My book didn't cover it very well. We just need more practice. Quote Link to comment Share on other sites More sharing options...
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