Question

-6<9+3y<6

9+3y>-6
y>-5

9+3y<6
y<-1

On a number line, dot -1 and -5. Is this right?

3f>15 or 2f<-4

15>3f
f>5

2f<-4
F<-2

Is this right?

Answer 1

Yes, both are correct. In the second question, you have an either/or answer. Both inequalities cannot simultaneously be true.

Answer 2

is the second question right?

Answer 3

Yes, but only because of the "or" in the second question.