Carlos is running 25 meters every 3 seconds and Darius is running 30 meters every 4 seconds. Complete a table for each boy up to at least 20 seconds. Use one set of coordinates to draw two graphs showing the proportional relationship between time and distance for each boy. Use the graphs to compare the two boys' speeds in two ways. Show and interpret the use of a horizontal and then a vertical reference line. Be sure to refer to the graphs in your explanation.