7is subtracted from seven times a number.

Which statement about the relative areas of triangle abd and triangle xyz is true

What is the size of the matrix resulting from

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?