Answer:
see photo attached for analysis
R(–3, 4)
Step-by-step explanation:
Let Q(-9,8) and S(9,-4) be the given points and let R(x, y) divides QS in the ratio 1:2.
By section formula,

Here, 
Substituting this in the section formula
To simplifying the expression, we get

⇒ R(x,y) = R(–3,4)
Hence, the coordinates of point R is (–3, 4).
No, the least amount of points you can do on a graph to see the pattern is 3 because than you can get a better line for your graph to see what kind of pattern your graph is.