Khan/khan-exercises — Issue #8471: Midpoint formula - IMPORTANT PROBLEM!!!!!!
Author: KhanBugz
Created: 2011-12-12 22:06:58+00:00
State: open
Labels: chrome, win7, wrong-or-unclear

for the hints
it says that the average should be -7 but it shows -9

[midpoint_formula.html?seed=3&problem=find-point](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/midpoint_formula.html?seed=3&problem=find-point&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/midpoint_formula.html?seed=3&problem=find-point&debug&activity=%5B%5D)

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Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2

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