Khan/khan-exercises — Issue #13278: Graphing inequalities 2 - Graphing Inequalities problem - answer is wrong
Author: KhanBugz
Created: 2012-02-07 18:30:55+00:00
State: open
Labels: chrome, win7, wrong-or-unclear

Reporter: emy_pu@yahoo.com

The following problem is given:

Graph the following inequality and determine if the points (4,2) or (7,-9)are solutions:

3x + 26 >= -4

I've solved the problem but the site says the answer is wrong so I've requested to Show Steps.

To separate y from the rest of the terms the answer says that it "divides both sides by 2".

However, after multplying, the sign is not changed (instead of >= it should be <=)

Thanks.

[graphing_inequalities_2.html?seed=136&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/graphing_inequalities_2.html?seed=136&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/graphing_inequalities_2.html?seed=136&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5B%5B0%2C-2%5D%2C%5B2%2C-5%5D%2Ctrue%2Ctrue%5D%2C%5B%5C%22%5C%22%2C%5C%22%5C%22%5D%5D%22%2C74%5D%2C%5B%22hint-activity%22%2C%220%22%2C4%5D%2C%5B%22hint-activity%22%2C%220%22%2C5%5D%2C%5B%22hint-activity%22%2C%220%22%2C5%5D%2C%5B%22hint-activity%22%2C%220%22%2C5%5D%2C%5B%22hint-activity%22%2C%220%22%2C6%5D%2C%5B%22hint-activity%22%2C%220%22%2C6%5D%2C%5B%22hint-activity%22%2C%220%22%2C6%5D%2C%5B%22hint-activity%22%2C%220%22%2C6%5D%2C%5B%22hint-activity%22%2C%220%22%2C7%5D%5D)

[[[[0,-2],[2,-5],true,true],["",""]]]

Mozilla/5.0 (Windows NT 6.1) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.77 Safari/535.7

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