1. horizontal asymptotes 2x
2. horizontal asymptotes 3x
3. horizontal asymptotes 2x+1
4. horizontal asymptotes 3x−1
5. horizontal asymptotes 2x−3
6. horizontal asymptotes 2x−3
7. horizontal asymptotes 5x+3
8. horizontal asymptotes f(x)=4−2x+2
9. horizontal asymptotes f(x)=4−x+1−1
10. horizontal asymptotes −4x+1