[LON-CAPA-users] formula response with equal sign

[ciskep]

We are haveing a hard time with formula response problems and would like some
advise.  We want to have the students enter he entire equation as an answer. 
For example, if the problem was:

"Write the equation of the line that has a slope of 2 and a y-intercept of 1."

The students could enter y=2x+1 or they could enter 1=y-2x or something else.

Does anyone have a similar problem coded open source that we could look at?


Thank You
Paul Ciske
Mio