Question

Graph the number of heartbeats versus time (in minutes) on graph paper, joining the points to make a smooth curve. Draw a second relationship on the same set of axes, showing the resting heart rate of 50 beats per minute. Use the slopes of the two relationships graphed to explain why the test results indicate that the person must be exercising.

Answer 1

I graphed the data, how do I do the second part "Draw a second relationship on the same set of axes, showing the resting heart rate of 50 beats per minute. " ?

Answer 2

"the resting heart rate of 50 beats per minute."
it's telling you that for every time, the function will have 50 bpm. It's going to be a straight horizontal line at the 50bpm coordinate axis across all time.