Answer:
1) (-1,4)
2) (3,-2)
3) (4,1)
4) (3,0)
Explanation:
Half the distance between the different coordinates, ignoring the coordinates that are the same between both points. (1,0) and (5,0) become (3,0) because 5-1=4 and 4/2 = 2 and 1+2=3.
Hope this helps <3