Sally and miguel used different information from the diagram

Sally and miguel used different information from the diagram below to compute the slope of line AF. sally computed FE/ED,and miguel computed CB/BA.With statement is true? A. only sally\'s slope is correct. B.Only miguel\'s slope is correct. C.Both students\'slope is correct.

Is the same calculate the slope of a line in any point, so:

Correct answer is C: Both student\'s slope are correct