Use the Graph to answer the question. Y axis represents heartbeats and X axis represents time. (sec).

Question

Graph points: (12, 18) , (10, 15) , (6 , 9) , ( 4, 6).

What is the average heartbeats per second?

Answer 1

To find the average heartbeats per second, we need to find the total change in heartbeats and divide it by the total change in time.

The change in heartbeats is 18 - 6 = 12.
The change in time is 12 - 4 = 8.
Therefore, the average heartbeats per second is 12/8 = 1.5.

Answer 2

A. 3 beats per second.
B. 2 beats per second.
C. 1 1/2 beats per second.
D. 2/3 beats per second.

Answer 3

C. 1 1/2 beats per second.