Khan/khan-exercises — Issue #11190: Parabola intuition 3 - Negative instead of negative 1 should be accepted
Author: KhanBugz
Created: 2012-01-14 03:39:26+00:00
State: open
Labels: firefox, win7, wrong-or-unclear

Reporter: christilin@msn.com

First, love the draggable dot and line!

Second, would be nice if for the coefficient was read as -1

[parabola_intuition_3.html?seed=33&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/parabola_intuition_3.html?seed=33&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/parabola_intuition_3.html?seed=33&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%223%2F8%5C%22%2C%5C%22-%5C%22%2C%5C%221%2F4%5C%22%2C%5C%220.25%5C%22%2C%5C%220.125%5C%22%2C%5C%220.625%5C%22%5D%22%2C139%5D%2C%5B%22correct-activity%22%2C%22%5B%5C%223%2F8%5C%22%2C%5C%22-1%5C%22%2C%5C%221%2F4%5C%22%2C%5C%220.25%5C%22%2C%5C%220.125%5C%22%2C%5C%220.625%5C%22%5D%22%2C5%5D%5D)

[["3/8","-","1/4","0.25","0.125","0.625"],["3/8","-1","1/4","0.25","0.125","0.625"]]

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:9.0.1) Gecko/20100101 Firefox/9.0.1

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