B'' (-4, 4)
1) Given that this triangle ABC has the following points located at A =(3,5), B=(1,6), and C=(7,1).
2) Let's focus on point B, and apply the following transformations:
1st Translation
(x, y) --> (x+1, y+2)
B (1,6)---> B' (2,8)
2nd Translation
(x, y) --> (x-6, y-4)
B'(2,8)--->B'' (-4, 4)
3) Thus, the final location of point B'' is (-4, 4)