1. horizontal asymptotes 1x
2. horizontal asymptotes 1x2
3. horizontal asymptotes xx+1
4. horizontal asymptotes 11+x2
5. horizontal asymptotes 2x
6. horizontal asymptotes 3x2
7. horizontal asymptotes 1x3
8. horizontal asymptotes x+2x−1
9. horizontal asymptotes x2x2+1
10. horizontal asymptotes 1x−3