Khan/khan-exercises — Issue #11604: Parabola intuition 3 - correct answer checks as wrong
Author: KhanBugz
Created: 2012-01-19 15:28:41+00:00
State: open
Labels: chrome, snowleo, wrong-or-unclear

Even the provided answer does not work.

[parabola_intuition_3.html?seed=82&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/parabola_intuition_3.html?seed=82&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/parabola_intuition_3.html?seed=82&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%22-1%2F8%5C%22%2C%5C%221%2F2%5C%22%2C%5C%223%2F8%5C%22%2C%5C%220.375%5C%22%2C%5C%22-0.125%5C%22%2C%5C%220.875%5C%22%5D%22%2C85%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%22-1%2F8%5C%22%2C%5C%22-1%2F2%5C%22%2C%5C%223%2F8%5C%22%2C%5C%220.375%5C%22%2C%5C%22-0.125%5C%22%2C%5C%220.875%5C%22%5D%22%2C6%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%22-1%2F8%5C%22%2C%5C%22-1%2F2%5C%22%2C%5C%223%2F8%5C%22%2C%5C%220.375%5C%22%2C%5C%22-0.125%5C%22%2C%5C%220.875%5C%22%5D%22%2C1%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%22-1%2F8%5C%22%2C%5C%22-2%5C%22%2C%5C%223%2F8%5C%22%2C%5C%220.375%5C%22%2C%5C%22-0.125%5C%22%2C%5C%220.875%5C%22%5D%22%2C10%5D%2C%5B%22hint-activity%22%2C%220%22%2C1%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C3%5D%2C%5B%22hint-activity%22%2C%220%22%2C4%5D%2C%5B%22hint-activity%22%2C%220%22%2C4%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%223%2F8%5C%22%2C%5C%22-2%5C%22%2C%5C%223%2F8%5C%22%2C%5C%220.375%5C%22%2C%5C%22-0.125%5C%22%2C%5C%220.875%5C%22%5D%22%2C24%5D%2C%5B%22hint-activity%22%2C%220%22%2C5%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%223%2F8%5C%22%2C%5C%22-2%5C%22%2C%5C%223%2F8%5C%22%2C%5C%220.375%5C%22%2C%5C%22-0.125%5C%22%2C%5C%220.875%5C%22%5D%22%2C24%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%223%2F8%5C%22%2C%5C%22-1%2F2%5C%22%2C%5C%223%2F8%5C%22%2C%5C%220.375%5C%22%2C%5C%22-0.125%5C%22%2C%5C%220.875%5C%22%5D%22%2C4%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%223%2F8%5C%22%2C%5C%22-2%5C%22%2C%5C%223%2F8%5C%22%2C%5C%220.375%5C%22%2C%5C%22-0.125%5C%22%2C%5C%220.875%5C%22%5D%22%2C7%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%223%2F8%5C%22%2C%5C%22-2%5C%22%2C%5C%223%2F8%5C%22%2C%5C%220.375%5C%22%2C%5C%22-0.125%5C%22%2C%5C%220.875%5C%22%5D%22%2C31%5D%5D)

[["-1/8","1/2","3/8","0.375","-0.125","0.875"],["-1/8","-1/2","3/8","0.375","-0.125","0.875"],["-1/8","-1/2","3/8","0.375","-0.125","0.875"],["-1/8","-2","3/8","0.375","-0.125","0.875"],["3/8","-2","3/8","0.375","-0.125","0.875"],["3/8","-2","3/8","0.375","-0.125","0.875"],["3/8","-1/2","3/8","0.375","-0.125","0.875"],["3/8","-2","3/8","0.375","-0.125","0.875"],["3/8","-2","3/8","0.375","-0.125","0.875"]]

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/13.0.782.112 Safari/535.1

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