"I would always rock my daughter to sleep first in my arms before laying her down in her crib, and I was convinced that this was the only way my daughter would surely sleep in her crib. My husband decided to challenge my theory one day and began laying her down in her crib wide awake. To my surprise, she would get herself into a comfy position and quickly fall asleep. I was shocked to realize how set I was on my own assumption, and that me rocking her to sleep first was not the actual cause of her easily sleeping in her crib"

Can you think how this would translate linearly?On the horizontal (x) axis what would you plot against the vertical (y) axis?