The first leg of the graph represents Manuel riding his bike for 3 units of time going 5 units distance gradually increasing his speed. The second line segment represents Manuel staying where he his for 4 1/2 units of time. The third represents Manuel going a fast speed back to where he started. I think.
Or the first is him going that distance picking up speed, the second him going a constant speed, and the third him slowing down/speeding up.
