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 1 Start Fraction 1 over 2 End Fraction beats per second Skip to navigation page 14 of 14 Formula keypad has been closed. Press Control + Backslash to open it again.Formula keypad has been closed. Press Control + Backslash to open it again.Formula keypad has been closed. Press Control + Backslash to open it again.