Answer:
Exact Form: 2√26
Decimal Form: 10.19803902
…
Step-by-step explanation:
In this question, it is given that y varies inversely as x . So the equation is

And here k is the proportionality constant .
And when x=6, y=12

So the values of the proportionality constant k is 72 and the correct option is B.
I would need to see the multiple choice to answer this question!
The answer is b, I hope this is correct