Question

Y is directly related to x and y is 81 when x is 27 the constant of.variation is

Answer 1

The constant of variation is 3

Explanation:

Given.

`y=81`

`x=27`

And y is directly related to x

`y` ∝
`x`

Here k is constant of variation

`y=kx`

`k=(y)/(x)`--------------(1)

Put the
`y` and
`x` value in equation 1.

`k=(81)/(27)`

`k=3`

So, the constant of variation is 3.