( look at picture ) answer all for the lil golden brain. NO EXPLANATION NEEDED ! correct answers only will get awarded golden brain

Given this information, which expression must represent the value of b?

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.

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)