Answer: C) 9/2
Step-by-step explanation:
Yoy have the following direct proportion:
[tex]x=ky[/tex], where:
k is the constant of proportionality.
When you solve for y, you obtain:
[tex]y=x/k[/tex]
The problem gives you the porportion x/y=2/9
Therefore when you solve for y you obtain:
[tex]y=x*9/2[/tex]
Then:
[tex]k=9/2[/tex]
OPTION C
