In the equation x=-3y, what is the unit rate?

The unit rate is - 1/3.

In direct variation, y varies directly to x by a constant ratio k.

Its equation looks like this: y = kx; where k stands for the constant ratio.

In the above equation. x = - 3y, it should be converted to the proper equation. both sides must be transferred and its accompanying sign must be changed.

3y = - x

3y/3 = - x/3

y = (-1/3) x

where: y is the total value; - 1/3 is the unit rate; and x is the number of units