Which inequality is shown in the graph? 5
X
5
-5
O A. yz x2 + 3
B. y = x2-3
O C. yz x2-3
O D. ys x2-3

How can you tell when x and y are not directly proportional?

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.

Ellen makes and sells bookmarks. she graphs the number of bookmarks sold compared to the total money earned. why is the rate of change for the function graphed to the left?