Use the image to answer the question.
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.
What is the average number of heartbeats per second?
(1 point)
Responses
3 beats per second
3 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
2 beats per second
2 beats per second
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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.
What is the average number of heartbeats per second?
(1 point)
Responses
3 beats per second
3 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
2 beats per second
2 beats per second
Skip to navigation
The average number of heartbeats per second cannot be determined from the given information.
To find the average number of heartbeats per second, we need to determine the total number of heartbeats and divide it by the total time.
Looking at the graph, we can see that the resting heart rate is a straight line. We can count the number of heartbeats in one second by looking at the point where it crosses the 1-second mark.
The line crosses the 1-second mark at the point where the y-value is 3. Since the y-axis represents heartbeats, this means there are 3 heartbeats in one second.
Therefore, the average number of heartbeats per second is 3.
To find the average number of heartbeats per second, we need to calculate the slope of the line representing the resting heart rate on the graph. The slope represents the change in heartbeat per unit of time.
First, let's determine the change in heartbeats over the total time period. From the graph, we can see that the resting heart rate line goes from 0 beats at the start to 12 beats at the end, which gives us a change of 12 - 0 = 12 beats.
Next, let's calculate the change in time over the same period. The graph shows that the time range is from 0 to 12 seconds, which gives us a change of 12 - 0 = 12 seconds.
Now, we can calculate the slope by dividing the change in heartbeats by the change in time. In this case, the slope is 12 beats / 12 seconds = 1 beat per second.
Therefore, the average number of heartbeats per second is 1 beat per second.