You and a friend race each other. you give your friend a 50-foot head start. the distance y (in feet) your friend runs after x seconds is represented by the linear function y=14x+50 . the table shows the distances you run. time (seconds) x : 2, 4, 6, 8 distinct (feet) y : 38, 76, 114, 152 a. what is the rate per second. b. write a linear function that relates your distance to the number of seconds. in the same coordinate plane, graph the linear functions that represent the distances of you and your friend.