Final answer:
The y-value of point P is b) -10.
Step-by-step explanation:
To find the y-value of point P, we need to look at the coordinates of point P before and after the translation.
The original y-value of point P is 6.
After the translation rule (x,y)→(x−2,y−16) is applied, the y-coordinate becomes 6 - 16 = -10.
Therefore, the answer is (b) -10.