Answer the Question Using the Value of R and the Given

Multiple Choice

Answer the question using the value of r and the given best-fit line on the scatter diagram.
- The scatter diagram and best-fit line show the data for the number of cars waiting by a school (y) and the amount of time after the end of classes (x) . The correlation coefficient r is -0.55. Predict the number of cars at time 8
After the end of classes.

A) 6
B) No valid prediction is possible.
C) 5
D) 7