Answer:
(6, -11)
Step-by-step explanation:
The translation (x-2,y+3) means "subtract 2 from x coordinate" and "add 3 to the y coordinate".
After the transformation, we have the point B'(4,-8). Which point, let it be (x,y), after being transformed is B'(4,-8)??
According to the transformation rule, we have to "subtract 2 from x coordinate" and "add 3 to the y coordinate", thus
x-2=4
x=4+2
x=6
and
y+3=-8
y=-8-3
y=-11
THe coordinate of B are (6,-11)
w=5
the triangle has the same size of area as the side of the rectangle so therefore 5
my answer would be 25
, so our solutions are 
and 
.