Answer:
Decreasing at a decreasing rate.
Step-by-step explanation:
Given the function;
Graphing the function to observe its behavior.
we have;
from the graph, we can observe that the value of y decreases as x increases.
Also, taking a close look at the graph, we can observe that the rate at which y decreases also decrease as x increases.
From x=0 to x=10, y decreases by approximately 3 units, while from x=10 to x=20 y decreases by approximately 2 units.
Therefore, y is decreasing at a decreasing rate.