What is the area of both? Lmk pls

30 is 6 multiplied by a number y as a equation

Ineed if you could explain and give me the answer you! this needs done

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?