Question

the scatter plot and line of best fit below show the length of 9 peoples femur (the long leg bone in the thigh) and their height in centimeters. what is the meaning of the $y$-value on the line when $x = 50$?

Explanation:

The x-axis represents femur length (cm), and the y-axis represents height (cm). The line of best fit is a predictive model for the relationship between these two variables. When $x=50$, the corresponding y-value is the predicted average height for a person with a 50-centimeter femur, based on the trend observed in the 9 people's data.

Answer:

It is the predicted average height (in centimeters) of a person whose femur length is 50 centimeters, based on the trend shown by the data.