Question

Is `3y=1/3x` a direct variation, then if so, how do you find y when x=4?

Answer 1

If an equation can be expressed as
`y=m*x` for some constant `m` then it is a direct variation

`3y = 1/3x`
can be expressed as
`y = (1/9) x`
and is therefore a direct variation.

When `x=4`
`y = (1/9)(4) = 4/9`