Question

Is `3x-3y=0` an inverse variation?

Answer 1

To be an inverse variation and equation must be or must be transformable into
`xy = c` (or equivalently `y = c/x`) for some constant `c`

`3x-3y = 0`

`rarr 3y = 3x`

`rarr y=(1)x`

which is not and inverse variation.

(It is, in fact, a direct variation).