Suppose that `y`  is inversely proportional to `x` .

Find the constant of proportionality `k`  if `y = 10`  when `x = 13` .
`k =` 

Using the `k`  from above write the variation equation in terms of `x` .
`y =` 

Using the `k`  from above find `y`  given that `x = 15` .
` y =` 

If needed, round answer to 3 decimal places.
Enter DNE for Does Not Exist, oo for Infinity