Yz has endpoint y(-1,-11) and z(-1-3) find the length of yz to the nearest tenth

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 is y times x by? y is __ times x

Sate why the measure of angle d is 120 degrees