To determine the coordinates of point B' after translating point B down by 8 units, we first need to know the original coordinates of point B.
Assuming point B has coordinates (x, y), the translation down by 8 units affects the y-coordinate.
The new coordinates B' will be: \[ B' = (x, y - 8) \]
If you provide the original coordinates of point B, I can calculate the specific coordinates for B'.