Answer:
D(-2,5;1); C(-1,1); E(0.5,3).
Step-by-step explanation:
Imagine that there is a line AB, it is divided into 4 equal parts. If there are 4 parts, There are 4+1=5 points. That's obvious that if parts are equal , the third point is on the middle of the line AB, suppose it is the point C
xc= (xa+xb)/2
xc=( -4+2)/2= -1
yc= (-3+5)/2=1
(-1,1)
There are to unknown points D (between A and C), and E (between C and B). D is on the middle of AC .
Xd= (-4-1)/2=-2.5
yd= (-3+1)/2=-1
(-2,5;1)
E is on the middle of CB
xe= (-1+2)/2= 0.5
ye=(1+5)/2=3
(0.5, 3)
