Can someone explain how to do this and me

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?

Which statements regarding efg are true? check all that apply.

If chord ab is congruent to chord cd, then what must be true about ef and eg?