Use the image to answer the question.
A graph shows an x-axis representing time in seconds ranging from 0 to 12 in increments of 2. The y-axis represents heartbeats ranging from 0 to 18 in increments of 3. The graph shows a line representing resting heart rate. The line passes through the following plotted points: left parenthesis 4 comma 6 right parenthesis; left parenthesis 6 comma 9 right parenthesis; left parenthesis 10 comma 15 right parenthesis; and left parenthesis 12 comma 18 right parenthesis.
What is the average number of heartbeats per second?
(1 point)
Responses
2 beats per second
2 beats per second
112 beats per second
1 Start Fraction 1 over 2 End Fraction beats per second
23 beat per second
Start Fraction 2 over 3 End Fraction beat per second
3 beats per second
3 beats per second
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idk if you still need the answers or not but here they are if you do (or if anyone else needs it)
1 - 3/2
2 - 1 1/2 beats per second
3 - D
4 - Graph C
5 - The relationship is proportional.
(this is for connexus btw)
The average number of heartbeats per second can be calculated by finding the total change in heartbeats divided by the total change in time.
The total change in heartbeats is 18 - 6 = 12 beats.
The total change in time is 12 - 4 = 8 seconds.
Therefore, the average number of heartbeats per second is 12/8 = 1.5 beats per second.
The correct answer is:
Start Fraction 2 over 3 End Fraction beat per second
To find the average number of heartbeats per second, we need to determine the change in heartbeats over the change in time.
First, let's find the total change in heartbeats. The resting heart rate starts at 6 beats and ends at 18 beats, so the change in heartbeats is 18 - 6 = 12 beats.
Next, let's find the total change in time. The time range is from 0 seconds to 12 seconds, so the change in time is 12 - 0 = 12 seconds.
Finally, to calculate the average number of heartbeats per second, we divide the total change in heartbeats by the total change in time: 12 beats / 12 seconds = 1 beat per second.
Therefore, the average number of heartbeats per second is 1 beat per second.
To find the average number of heartbeats per second, we need to calculate the total number of heartbeats and divide it by the total time interval.
From the given graph, we can see that the line representing resting heart rate passes through the points (4, 6), (6, 9), (10, 15), and (12, 18).
To calculate the total number of heartbeats, we add the y-coordinates of these points: 6 + 9 + 15 + 18 = 48.
Next, we calculate the total time interval by subtracting the initial time from the final time: 12 - 0 = 12 seconds.
Finally, we divide the total number of heartbeats by the total time interval: 48 heartbeats / 12 seconds = 4 beats per second.
Therefore, the average number of heartbeats per second is 4 beats per second.