Chana and Josiah started skating at the same time in the same direction, but Josiah had a head start 101010 meters past the starting line. Chana skated 333 meters per second and Josiah skated 222 meters per second. Here's a graph that shows a system of equations for this scenario where xxx is the number of seconds since Chana and Josiah started skating and yyy is the distance in meters from the starting line.