Khan/khan-exercises — Issue #6965: Converting between slope intercept and standard form - not all correct answers are marked as correct
Author: KhanBugz
Created: 2011-11-23 14:18:19+00:00
State: open
Labels: firefox, wrong-or-unclear

A=2, B=1, C=-2 is a correct solution.
But also all multiples of these coefficients should be accepted.
Most importantly: A=-2, B=-1, C=2 as the sign of the coefficients depends on the side of the equation where you gather your x,y

[converting_between_slope_intercept_and_standard_form.html?seed=177&problem=slope-to-standard](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/converting_between_slope_intercept_and_standard_form.html?seed=177&problem=slope-to-standard&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/converting_between_slope_intercept_and_standard_form.html?seed=177&problem=slope-to-standard&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%22-2%5C%22%2C%5C%22-1%5C%22%2C%5C%222%5C%22%5D%22%2C11%5D%2C%5B%22correct-activity%22%2C%22%5B%5C%222%5C%22%2C%5C%221%5C%22%2C%5C%22-2%5C%22%5D%22%2C19%5D%5D)

[["-2","-1","2"],["2","1","-2"]]

Mozilla/5.0 (X11; Linux x86_64; rv:7.0.1) Gecko/20100101 Firefox/7.0.1

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