Pls help its rlly hard

Astudent received the following grades last semester. find the student's semester grade point average. an a is algebra (3 credits), a b in history ( 3 credits), a in sociology ( 3 credits) a d in english ( 3credits) and a c in seminar ( 2credits). an a is worth 4 points, a b is worth 3 points a c is worth 2 points and a d is worth 1 point.

Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)

Me asap! what is the slope of this line? enter your answer in the box.