Determine the intervals of increase and decrease of the functions

y = (3x^2 - 2)/x

y = (1-x^2)/x

I cant find out how to get the correct answer for these 2. According to the textbook, the answers for the first are (-inf,0) (0,inf) Increase, no decrease.

And the 2nd is the same but no increase.

I cant figure out how to find this.