y represents the distance of the snail to the flower, in ft
x represents time, in hours
In the beginning, the distance of the snail to the flower is 7 feet. Then, the point (0, 7) is on the graph
After the first hour, the snail crawls 2 feet, then its distance to the flower is 7 - 2 = 5 ft. Then, the point (1, 5) is on the graph.
After the second hour, the snail crawls another 2 feet, then its distance to the flower is 5 - 2 = 3 ft. Then, the point (2, 3) is on the graph.
After the third hour, the snail crawls another 2 feet, then its distance to the flower is 3 - 2 = 1 ft. Then, the point (3, 1) is on the graph.
The graph is
