Jeannette and Keagan collect data about the length of a rope as knot are tied in it. The equation that fits their data is y= 102 - 6.3x, where x represents the number of knots and y the length of the rope in centimeters. Mitch had a piece of rope cut from the same source. Unfortunately he lost his data and can remember only that his rope was 47 centimeters long after he tied 3 knots. What equation describes Mitch's rope?

Question