Khan/khan-exercises — Issue #7648: Equation of a hyperbola - The answer button does not respond
Author: KhanBugz
Created: 2011-12-03 05:27:47+00:00
State: open
Labels: ie8, ie9, other, vista

Reporter: mew.matilda@gmail.com

I keep hitting the check answer button, and it does nothing.

[equation_of_a_hyperbola.html?seed=164&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/equation_of_a_hyperbola.html?seed=164&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/equation_of_a_hyperbola.html?seed=164&problem=0&debug&activity=%5B%5D)

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