Ap Statistics question please help…

Is the final course grade in a particular class affected by a
student’s attendance? The information shown below was calculated
based on the final course grades and absenses of 63 AP Statistics
students (x is the number of days absent and y is the course
grade).

A. Use the information provided to write the equation
of the least-squares regression line. Show all calculations

B. Interpret the correlation r = -.328

C. Interpret the slope of the least-squares regression
line.

D. Interpret the y-intercept of the least-squares
regression line.

E. Calculate r^2 (r squared) and interpret it.