The measurement of the strings decreases. (It halves each time)
Substitute either set of points into the equation:
(3, -1) and (-6,-4)
-1= -5/9(3)+b
-1= -15/9+b
-1+5/3= -5/3 +5/3 +b
2/3=b
So,
f(x)= -5/9 (x) + 2/3
Y =18. You have to add 4y on both sides then you get 1y=18 and just divided
The answer is m = r/(k+q).
0.44…
0.44… = 4/9, if you type that into a calculator you’ll see that the number 4 repeats forever