AP STATISTICS, help me find the answer to these three questions .

Ineed ! the person who answers and shows their work on they got the answer first will be marked the !

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?