A=90
B=38
C=45
D=52
Thanks

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

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?

Plz ( true - false) all triangles have interior angles whose measure sum to 90.