Question

If y varies inversely as x and y = 28 when x = 4, then how do you find k, the constant of proportionality?

Answer 1

`k=112` and variation equation is `x y= 112`

Explanation:

`y prop 1/x or y = k* 1/x or x y= k ; k` is called proportionality

constant. `x y= k ; y=28 ,x= 4 :. k= x*y=28*4`

or `k=112` .The variation equation is `x y= 112` [Ans]