6. The domain of this relation is: [-3,2] and the range is: [-4,2], this is not a function because if we make a vertical line we can see that for one x-value there are 2 y-values and that makes that this relation can not be a function.
8. The domain for this function as we can see is (-inf,inf) and the range is: [-1,3], this is a function because for each x-value exists one and just only one y-value.
