In order to determine if y varies directly with x, we need to check if the equation can be written in the form y = kx, where k is the constant of variation.
The given equation is 3y = -7x - 18. We can write it in the form y = ( -7/3 )x - 6 by dividing both sides of the equation by 3.
From this equation, we can see that y does not vary directly with x since it does not have the form y = kx.
Determine whether y varies directly with x. If so, find the constant of variation k and write the equation.
3y=-7x-18
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