Junior high school math problem: the image of function y=2/x, when x; - 1; When y & gt=- 1j, the value range of x is: x < =-2.

Because the function y=2/x is an inverse proportional function, y decreases with the increase of x and increases with the decrease of x.

Therefore, when x is less than -2, y is greater than 2/(-2)=- 1.

When y is greater than or equal to-1, x is less than or equal to 2/(- 1)=-2.