Answer:
The coordinates are B'(1,0.5)
Step-by-step explanation:
Since the center of dilation is at the origin, we just divide the coordinates of the point by the scale factor.
In this question:
Scale factor of 2
B(2,1)
2/2 = 1
1/2 = 0.5
So, the coordinates are B'(1,0.5)