A; rate of change is the same as slope, so, using the slope formula,

, where

is the slope and

,

,

, and

are the

and

values.
Plug in

points for

and

, water level being the

and time being the

since we're looking for the answer in ft/hr-- you can choose any two, but from the same row.




ft/hr
Answer:
Problem 10:
Input X: -2, -1, 0, 1, 2
Output Y: -2, 1, 2, 1, -2
Nonlinear, exponential because there's an exponent. Plug the X values in place of X and solve solution to get Y values. Then graph
Problem 11: Linear because there's no exponent
To solve this you must first convert these in to decimals. 48 1/3= 48.3 repeating 6 3/4=6.75. Then you should divide 48.3 repeating by 6.75 and then you a should get your answer!