Steps to Reproduce:

# From your homepage, navigate into a class that you are an Instructor in.

# Click 'Questions'.

# Click 'New Question'.

# Click 'Question Designer'.

# Give the question a name.

# In the Question Text CKeditor, click the 'Insert/Edit Response Area' button.

# Select 'Mathematical Formula' as the Question Type. (This should be the default.)

# For the sub-type, choose Equation.

# Enter the desired answer. The suggested example is {{x+3y=1}}, so try something like {{2x+4y=2}}.

# Click 'OK'.

# Enter some additional question text if desired.

# Click 'Finish'.

# Click 'Preview'.

# In the 'Preview Question' window, type in the correct answer and click 'Grade'.

Expected Result:

The question is graded as being correct.

Actual Result:

The question is graded as being incorrect. However, the correct response shown matches your response exactly, so exactly why your answer is incorrect is not clear.

Additional Notes:

Our QA test case on this particular question type indicates that the solution to these question type must be solved for a single variable. So, even though an instructor might enter the correct answer as {{2x+4y=2}}, if a student does the same it will be marked incorrect. The student apparently must enter {{x=1-2y}} or {{y=1/2-x/2}} in order for the result to be graded correctly. This is misleading, because the example given for this particular response sub-type does not follow this requirement. The example should be changed or this response area type should be improved so that the answer would be marked correct in this case.

Currently in the works for 2020.0

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