Does y vary directly with x? if

Question

3y=-7x-18

yes:3
yes:-7
no
yes: 7/3

my first thought was no but I question 7/3??

Answer 1

no

If y = -7/3 x then yes, but adding the -6 messes it up.

To see this is true, plug in two values for x and see whether y is the same multiple of the values.

Answer 2

I think the answer is no