Well I don't know if you are looking for the variable but here it is :)
Easily we can use formula y=(x-h)^2 +k
as equation of a parabola if vertex was (h,k):
Y=(x-1)^2 + 3
and maybe node (2,6) is incorrect for this vertex of a parabola!!!
The answer to your problem is
x=5/2
y=5
x=-4
y=2
Step-by-step explanation:
6:8=9:12=12:16=15:20
Assuming this question is trying to enquire as to how many bottle of
water there are in each case, you simply need to divide 162 by 9 to find
the answer, which is that there are 18 bottles of water in each case.