Rate of Change

Question 1

Based on the graph shown to the right, whose phone cost varies directly with the amount of time spent talking?

Revolt · Accepted Answer

B: Nikiya’s only

Question 2

Which graph shows a function that always has a negative average rate of change?

Revolt · Accepted Answer

B:

Question 3

Mark’s cost does not vary directly with time spent talking because

Revolt · Accepted Answer

B: the cost of 0 hours is not 0 dollars

Question 4

What is the average rate of change for this function on the given interval?

Revolt · Accepted Answer

B:

Question 5

Base on these results, the runner ran at a rate between 0.5 and 2 hours than between 1.5 and 2.5 hours.

Revolt · Accepted Answer

B: slower

Question 6

The ratios

Revolt · Accepted Answer

B: are not constant;

Question 7

which represents Nikiya’s

Revolt · Accepted Answer

B: cost per hour

Question 8

For this function, the average rate of change as x increases.

Revolt · Accepted Answer

A: increases

Question 9

therefore, the points in the table form a direct variation.

Revolt · Accepted Answer

B: do not

Rate of Change Answers