Khan/khan-exercises — Issue #5396: Converting between slope intercept and standard form - A, B, C are not unique.
Author: KhanBugz
Created: 2011-11-02 07:36:29+00:00
State: open
Labels: firefox, xp

Reporter: bishop.jacob@gmail.com

The coefficients A, B, and C in the standard form of a line are not unique. The "correct" answer was
A=-3, B=1, C=-3.
I chose to make A positive, so I got
A=3, B=-1, C=3.
That should be correct.

I think we either have to re-phrase the question here so the answer is unique, or check that answers are any scaled version of the correct coefficients.

[converting_between_slope_intercept_and_standard_form.html?seed=80&problem=slope-to-standard](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/converting_between_slope_intercept_and_standard_form.html?seed=80&problem=slope-to-standard&debug)

[["3","-1","3"]]

Mozilla/5.0 (Windows NT 5.1; rv:7.0.1) Gecko/20100101 Firefox/7.0.1

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