Which is the graph of f(x) = startroot x endroot?

The 4th graph

Step-by-step explanation:

To determine which graph corresponds to the    we will start with inserting some values for x and see what y values we will obtain and then compare it with graphs.

So, we can see that the pairs (1, 1), (2, 1.41), (4, 2), (3, 9) correspond to the fourth graph.

Do not be confused with the third graph - you can see that on the third graph there are also negative y values, which cannot be the case with the , the range of that function is  , so there are only positive y values for

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50