what is length of a segment with an endpoint of (-3,1) and a midpoint of (8,2)

Since the point (8,2) is the midpoint, we know that it is half way between endpoints. If we find the distance between (-3,1) and (8,2), and double it we will know the length of the segment: x2=8 x1=-3 y2=2 y1=1 So the segment length is