Carliās class built some solar-powered robots. They raced the robots in the parking lot of the school. The graphs below are all line segments that show the distance \(d\), in meters, that each of three robots traveled after \(t\) seconds.
Robot A traveled 5 meters per second, as shown by the point (1, 5) on its graph.
Robot B traveled 1.5 meters per second, as shown by the point (1, 1.5) on its graph.
Robot C traveled 0.4 meters per second, as shown by the point (1, 0.4) on its graph.
The speed of each robot can also be seen in the steepness of its graph, which is quantified as slope. But that perspective is not expected until grade 8.