Find an equation of variation in which y varies inversely as x and the following is true:

Question

y=31, when x=4

Originally, I mixed up the equations of inverse and direct variation, and got 31=m(4)
-----
b

Obviously, I got it wrong, but I've gone ahead and redid the problem, and I'd just like somebody to check it for me:

y=k/x
31=4K
(divide both sides by 4)

y=7.75

Answer 1

x y = k