Khan/khan-exercises — Issue #7694: Equation of a hyperbola - answer erroneously not accepted
Author: KhanBugz
Created: 2011-12-04 01:26:50+00:00
State: open
Labels: chrome, wrong-or-unclear, xp

Answer 9/7(x+6)-1 is not accepted.
After making use of the hints 9(x+6)/7-1 is the suggested answer though, which I suppose is the same :)

[equation_of_a_hyperbola.html?seed=36&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/equation_of_a_hyperbola.html?seed=36&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/equation_of_a_hyperbola.html?seed=36&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%229%2F7(x%2B6\)-1%5C%22%5D%22%2C419%5D%2C%5B%22hint-activity%22%2C%220%22%2C68%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%229%2F7(x%2B6)%2B1%5C%22%5D%22%2C443%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%227%2F9(x%2B6)-1%5C%22%5D%22%2C14%5D%2C%5B%22hint-activity%22%2C%220%22%2C193%5D%2C%5B%22hint-activity%22%2C%220%22%2C203%5D%2C%5B%22hint-activity%22%2C%220%22%2C215%5D%2C%5B%22hint-activity%22%2C%220%22%2C242%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%229%2F7(x%2B6)-1%5C%22%5D%22%2C269%5D%2C%5B%22correct-activity%22%2C%22%5B%5C%229(x%2B6)%2F7-1%5C%22%5D%22%2C41%5D%5D)

[["9/7(x+6)-1"],["9/7(x+6)+1"],["7/9(x+6)-1"],["9/7(x+6)-1"],["9(x+6)/7-1"]]

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.98 Safari/534.13

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