Rules of Writing Response is complete with at least 5 sentences. In a writing course, this would be akin to grading spelling and grammar separately from organization of the argument.
Final answer may not be correct. Points and curves are not graph correctly OR extra points were included. Does Not Meet Explanation is unclear or misses key points. Partially Meets Response is weak because of deficiencies in organization.
All key features are included in explanation. Meets The graph is neat. No answer given or response is not aligned to problem. Meets Good solid response with clear explanation. Grading rubricswhich outline the different facets of a solution and provide tiered assessments appropriate to the problem provide a solution to this for instructors.
I grade these on a five-point scale from 0 to 4 where 4 is a perfect solution, 3 is some small math mechanical error was seen, 2 is a good start, 1 is something somewhat relevant was written down, and 0 is nothing meaningful was stated.
However, a student may have misapplied a solution or not correctly understood the application of the mechanics to the problem in question.