Do all demand curves slope downward?

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Tags

1. #economics
2. #called
3. #however
4. #curves
5. #slope
6. #matter
7. #usual
8. #demand
9. #normally
10. #behavior
11. #assignment
12. #theory
13. #price
14. #economic
15. #curve
16. #people
17. #sometimes
18. #upward
19. #rises
20. #downward
21. #reflected