Straight line graph in the first quadrant shows ‘Time (in minutes)’ on the x axis and ‘Number of heartbeats’ on the y axis. The graph passes through the points (1, 150), (2, 300), (3, 450), and (4, 600).

Question

anonymous · Answer

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 cats. 

 It represents the average heartbeat rate of cats, in beats per minute. 

 It represents the change in heartbeat rate for unit change in time. 

 It represents the time in which a cat completes a heartbeat cycle