Given a function y = 2x-6 Q: when - 1 < x < 2, find the value range of Y

Given a function y = 2x-6 Q: when - 1 < x < 2, find the value range of Y

-1<x<2
Multiply by two
-2<2x<4
Subtract 6
-8<2x-6<-2
So - 8