Khan/khan-exercises — Issue #12393: Point slope form - Who cares what you multiply by zero
Author: KhanBugz
Created: 2012-01-29 14:47:58+00:00
State: open
Labels: firefox, wrong-or-unclear, xp

Reporter: verarium@gmail.com

When the solution involves a zero in the middle position (multiplying the bracket at right), it shouldn't matter what number is inside the bracket.

[point_slope_form.html?seed=128&problem=two-points](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/point_slope_form.html?seed=128&problem=two-points&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/point_slope_form.html?seed=128&problem=two-points&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5B%5C%22-2%5C%22%2C%5C%220%5C%22%2C%5C%220%5C%22%5D%5D%22%2C109%5D%2C%5B%22hint-activity%22%2C%220%22%2C4%5D%2C%5B%22hint-activity%22%2C%220%22%2C5%5D%2C%5B%22hint-activity%22%2C%220%22%2C6%5D%5D)

[[["-2","0","0"]]]

Mozilla/5.0 (Windows NT 5.1; rv:9.0.1) Gecko/20100101 Firefox/9.0.1

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