Demand worksheet covering fundamental economic concepts such as the law of demand, elasticity, and factors affecting demand, with diagrams for visual understanding.

Final Answer:
1. decrease, increase
2. elastic; example: demand for luxury cars — when price drops slightly, many more people buy them
3. increase; consumer preferences; right
4. decrease; expectations (about future income/jobs); left
5. Eating the first hamburger gives high satisfaction (e.g., 10 units of utility), the second gives less (e.g., 7 units), the third even less (e.g., 4 units) — each extra hamburger adds less happiness.
6. Complementary goods are items used together. Example: printers and ink cartridges — if you buy a printer, you’ll likely need ink.
7. Substitute goods are items that can replace each other. Example: tea and coffee — if coffee gets expensive, people may switch to tea.
8. decrease; price of related good (syrup is a complement to pancakes); left