Rate of Change Answers

What is the slope of line m?

b = ,

c =

The equation of this type of line is y = kx. What is special about k?

a = ,

The ratios

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

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

For Nikiya’s plan, the value of the constant of variation is ,

mph

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

What are the coordinates for the end of the interval?

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

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

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

What is the average rate of change between:x = 1 and x = 2?

What is the slope of line p?

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

which represents Nikiya’s

mph