Are you referring to this question?
http://www.jiskha.com/display.cgi?id=1311726747
Once you find N, find the slope of MN, it should be the same as the slope of the base, so the lines would be parallel.
The length of the line MN should be exactly 1/2 of the length of the base.
Obviously we cannot help you with the graphing part of the question.
M and N are the midpoints of PR(which has a line over PR) and QR(which has a line over QR)respectively. Using graph paper, repeat this process from the last problem using different coordinates for P, Q, and R. How do these lengths MN and PQ compare now? What do you think you can conclude about the lengths of these segments? (In your answer, make sure to include your coordinates for all points, the lengths of the segments, and your conclusion.) I sent the prior question to this question but I haven't received any response yet. I'm going to re-evalute the 1st part of the question. Thank you Daman
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