This graph shows a proportional relationship.
What is the constant of proportionality?
Enter your answer in the box.
D
Replanted trees
500
450
400
350
300
250
200
150
100
50
(5,225)
(3, 135)
1 2 3 4 5 6 7 8 9 10
Area (acres)
1
2
▶N
3