9.
The distance (in kilometers) Dora hiked is modeled as a function of time. Consider this graph of the
function. Find the average rate of change in distance hiked, measured in kilometers per hour, between 8:30 a. m to 1:30 p. m. Enter your answer to the nearest whole number.

Given:

The distance (in kilometers) Dora hiked is modeled as a function of time.

We need to determine the average rate of change in distance hiked, measured in kilometers per hour, between 8:30 am to 1:30 pm.

Average rate of change:

Let us write the time and the distance hiked in coordinates for the time 8:30 am and 1:30 pm.

Thus, the coordinates are (8.30, 4) and (1,12)

The average rate of change can be determined using the formula,

Substituting the points (8.30, 4) and (1.30,12), we get;

Rounding off to the nearest whole number, we get;

Therefore, the average rate of change is -1.

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step-by-step explanation:

describing distributions is one of the key skills you’ll need to earn a high score on the ap statistics exam. if you need proof of this, just flip through some past exam questions, which can be found at the collegeboard website. you’ll notice that the first free response question is almost always a question requiring you to look at a graph and describe it.

step-by-step explanation: just trying to get points sorry : (