Helppp and explain than you

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?

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)

What is the solution to the division problem below x3+x2-11x+4/x+4