Question

Jake recorded the number of heartbeats of rabbits for different time intervals, on a scatter plot. He drew a line of best fit on the scatter plot, as shown below.

Which statement best describes the meaning of the slope as a rate of change for this line of best fit?

It represents the increase in the heartbeat rate of rabbits.

It represents the change in heartbeat rate for unit change in time.

It represents the average heartbeat rate of rabbits, in beats per minute.

It represents the time in which a rabbit completes a heartbeat cycle.