(–1, 1, 3)
b
(–2, 2, 6)
c
(–10, –2, 2)
d
(–5, –1, 1)
Answer:
Step-by-step explanation:
Use the midpoint formula:
We want to find the midpoint of the line
that has endpoints.
We simplify to get;
This finally gives:
The correct answer is A.