Use the Graph to answer the question. Y axis represents heartbeats and X axis represents time. (sec).
Graph points: (12, 18) , (10, 15) , (6 , 9) , ( 4, 6).
What is the average heartbeats per second?
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.
A. 3 beats per second.
B. 2 beats per second.
C. 1 1/2 beats per second.
D. 2/3 beats per second.
C. 1 1/2 beats per second.
To find the average heartbeats per second, we need to calculate the total change in heartbeats divided by the total change in time.
First, we will calculate the total change in heartbeats:
18 - 6 = 12
Next, we will calculate the total change in time:
12 - 4 = 8
Now, we can calculate the average heartbeats per second:
12 / 8 = 1.5
Therefore, the average heartbeats per second is 1.5.
To find the average heartbeats per second, we need to divide the total number of heartbeats by the total time.
From the given graph points, we can see that the time intervals between the points are not equal. So, to get the total time, we need to calculate the sum of the differences between the x-values.
First, let's calculate the time intervals:
Time interval 1: 12 - 10 = 2 sec
Time interval 2: 10 - 6 = 4 sec
Time interval 3: 6 - 4 = 2 sec
Next, let's find the total time:
Total time = 2 sec + 4 sec + 2 sec = 8 sec
Now, let's calculate the total number of heartbeats:
Heartbeats in time interval 1: 18 - 15 = 3 heartbeats
Heartbeats in time interval 2: 15 - 9 = 6 heartbeats
Heartbeats in time interval 3: 9 - 6 = 3 heartbeats
Total heartbeats = 3 + 6 + 3 = 12 heartbeats
Finally, let's calculate the average heartbeats per second:
Average heartbeats per second = Total heartbeats / Total time
Average heartbeats per second = 12 heartbeats / 8 sec
Average heartbeats per second = 1.5 heartbeats/sec
Therefore, the average heartbeats per second is 1.5 heartbeats/sec.