Khan/khan-exercises — Issue #10818: Graphing systems of equations - Graphing Systems of Equations
Author: KhanBugz
Created: 2012-01-10 05:02:14+00:00
State: open
Labels: ie8, ie9, win7, wrong-or-unclear

My solution agrees with the solution given in "Show Solution", however it is not considered "correct". I agree with the unhappy face!
-x-5y=20
-9x-5y=-20
Answer: x=5, y=-5

[graphing_systems_of_equations.html?seed=152&problem=standard](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/graphing_systems_of_equations.html?seed=152&problem=standard&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/graphing_systems_of_equations.html?seed=152&problem=standard&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%225%5C%22%2C%5C%22-5%5C%22%2C%5B%5B-5%2C5%5D%2C%5B5%2C5%5D%2C%5B-5%2C-5%5D%2C%5B5%2C-5%5D%5D%5D%22%2C14%5D%5D)

[["5","-5",[[-5,5],[5,5],[-5,-5],[5,-5]]]]

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