Final answer:
The new location of point B after the translation is (7,-2).
Step-by-step explanation:
To find the new location of point B after translating the triangle 4 units right and 1 unit down, we simply need to add the translation values to the coordinates of point B.
The original coordinates of point B are (3,-1). Adding 4 to the x-coordinate and subtracting 1 from the y-coordinate, we get the new coordinates as (7, -2).