Graphs of Proportional Relationships Quick Check 2 of 52 of 5 Items Question Use the image to answer the question. What is the average number of heartbeats per second? (1 point) Responses 3 beats per second 3 beats per second 23 beat per second Start Fraction 2 over 3 End Fraction beat per second 2 beats per second 2 beats per second 112 beats per second
it goes from 6 to 8 and then 8 to 15 and then 15 to 18
To find the average number of heartbeats per second, we need to find the sum of the number of beats for each second and divide it by the total number of seconds.
The graph shows that at second 0, there are 6 beats per second.
At second 1, there are 8 beats per second, an increase of 2 beats.
At second 2, there are 15 beats per second, an increase of 7 beats.
At second 3, there are 18 beats per second, an increase of 3 beats.
To find the total number of beats, we add up the number of beats at each second:
6 + 8 + 15 + 18 = 47 beats
To find the average number of beats per second, we divide the total number of beats by the total number of seconds:
47 beats / 4 seconds = 11.75 beats per second
So, the average number of heartbeats per second is 11.75 beats per second.
To find the average number of heartbeats per second, we need to first calculate the total number of heartbeats and then divide it by the total time.
From the given information, we have the following data points:
- 6 heartbeats in 2 seconds
- 8 heartbeats in 3 seconds
- 15 heartbeats in 4 seconds
- 18 heartbeats in 5 seconds
To calculate the total number of heartbeats, we add up all the heartbeats:
6 + 8 + 15 + 18 = 47
To calculate the total time, we add up all the seconds:
2 + 3 + 4 + 5 = 14
Now, we can calculate the average number of heartbeats per second by dividing the total number of heartbeats by the total time:
47 heartbeats / 14 seconds = 3.3571 heartbeats per second (approximately)
Therefore, the average number of heartbeats per second is approximately 3.3571 beats per second.
To find the average number of heartbeats per second, we need to calculate the average rate of change between each interval on the graph.
First, we can calculate the rate of change between the first two intervals, which is from 6 to 8.
The change in heartbeats is 8 - 6 = 2, and the change in time is 1 second.
Therefore, the average number of heartbeats per second for this interval is 2 beats per second.
Next, we calculate the rate of change between the second two intervals, which is from 8 to 15.
The change in heartbeats is 15 - 8 = 7, and the change in time is 1 second.
Therefore, the average number of heartbeats per second for this interval is 7 beats per second.
Finally, we calculate the rate of change between the third two intervals, which is from 15 to 18.
The change in heartbeats is 18 - 15 = 3, and the change in time is 1 second.
Therefore, the average number of heartbeats per second for this interval is 3 beats per second.
To find the average number of heartbeats per second overall, we can find the average of these three rates.
(2 + 7 + 3) / 3 = 12 / 3 = 4
Therefore, the average number of heartbeats per second is 4 beats per second.