Raised D Nordictrack E15.0 www.whichicontrea.. Create your initial post on the DQ 5 Discussion Board in response to the following questions: . What does the limit definition have to do with slopes of secant lines and the slope of a tangent line? How are the derivative rules helpful? After posting, return to the board and read over the posts of your fellow classmates. Choose at least one classmate and create a post responding to his/her initial post on the Discussion Board