Question

(b) Bill removed 70 fish from his pond over a period of 7 days. He removed the same number of

fish each day. What was the change in the number of fish in the pond each day?
-70 fish

Answer 1

ROC=10/1

Explanation:

ROC=change in y-change in x

We can first write out a few more points.

(7,70), (14,140), (21,210)

210-140=70

140-70=70

21-14=7

14-7=7

So the ROC is 70/7 or 10/1