Rate of Change

Name: Revolt
Rating: 4.5 (1200 reviews)

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

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 3

The ratios

Revolt · Accepted Answer

B: are not constant;

Question 4

which represents Nikiya’s

Revolt · Accepted Answer

B: cost per hour

Question 5

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

Revolt · Accepted Answer

A: increases

Question 6

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

Revolt · Accepted Answer

B: do not

Rate of Change Answers