To answer this question we will use the following formula for the point that divides a segment with endpoints (x,y) and (z,k) into a ratio a:b:
Substituting b=1, a=2, (x,y)=(-1,2) and (z,k)=(8,15) in the above formula we get:
simplifying the above result we get:
Answer:
(5, 32/3).