Answer:
Two players ran two different routes, player one ran 19 post routes and 21 slant routes and a total of 508 yards, similarly the player two ran 30 post routes and 20 slant routes and a total distance of 710 yards, following system of linear equations describe this situation:
The solution to the (1) and (2) is as follows:
The following plot shows the solution:
Therefore the answer is:
(I) is the length of the slant route and (II) is the length of the post route.