Is the following relation a function yes or no

Me answer number 3plz explain how you do it

If, while training for a marathon, you ran 60 miles in 2/3 months, how many miles did you run each month? (assume you ran the same amount each month) write your answer as a whole number, proper fraction, or mixed number in simplest form. you ran __ miles each month.

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab