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
2 beats per second
2 beats per second
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
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The average number of heartbeats per second can be calculated by dividing the total number of heartbeats by the total time in seconds. From the graph, it seems that the resting heart rate line is horizontal and represents a constant rate of heartbeats. Therefore, we can assume that the resting heart rate is the same throughout the entire period shown on the graph.
To calculate the average number of heartbeats per second, we need to count the number of heartbeats and divide it by the total time in seconds. However, the image does not provide information on the actual number of heartbeats. Without this information, we cannot accurately determine the average number of heartbeats per second.
and what is that number/equation?
Without the actual number of heartbeats provided in the image, it is not possible to determine the average number of heartbeats per second or provide an equation for it. The image only provides the range of heartbeats and the time period represented on the graph. To calculate the average number of heartbeats per second, we would need to know the actual number of heartbeats within that time period.
Use the image to answer the question.
A figure shows four graphs labeled A, B, C, and D, each with an x and y axis and 0 at the origin, and each showing a curve. Graph A shows a straight line with a negative slope having x and y intercepts. Graph B shows a straight line with a positive slope having a y intercept above origin. Graph C shows an increasing concave up curve initiating at the origin. Graph D shows a straight line with a unit slope.
Decide which graph shows a proportional relationship.
(1 point)
Responses
C
C
A
A
D
D
B
B
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