Answer: 7
To get this answer, note how each new y coordinate is the result of adding 8 to the old y coordinate. A point like (10,-6) turns into (16,2) after adding 6 to the x coordinate and 8 to the y coordinate. The general rule is
(x,y) ---> (x+6, y+8)
The point (-5, -1) turns into (1, 7) after applying the rule