I need help please help me ​

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.

How do you use the elimination method for this question? explain, because i really want to understand!

Find the y-intercept and x-intercept for the equation 5x-3y=60 what is the y-intercept