Rate mi doggo on her birthday 1-10

For the equations below which statement is true ?

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?

Acircle has a circumference of 28.36 units what is the diameter of the circle