Question

If y varies inversely as x and y = 9 when x = 14, how do you find why when x = 6?

Answer 1

`y=21`

Explanation:

Let `k` be a constant

`x=kxx1/y`

`=> k=xy = 9xx14= 126`

`=>x=126/y`

So `y = 126/x`

At `x=6" we have "`

`y=126/6 = 21`