EconomicsGeneralQuality 70 · Exceptional

Supply and Demand: The Basic Idea

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Daphne Kim Verified Teacher
@author · 2026-08-26 · v1
7 min read
When demand rises and supply stays fixed, prices go up. When supply rises and demand is fixed, prices fall. Markets reach equilibrium where the quantity buyers want equals what sellers offer. Price controls like rent caps disrupt this, causing shortages or surpluses.
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Priya N.
16 days ago
Could you go deeper on the edge cases? Otherwise this is perfect.
Dr. Webb
16 days ago
Could you go deeper on the edge cases? Otherwise this is perfect.
Maya R. Teacher
16 days ago
Glad it's useful. I'm planning a follow-up covering the edge cases.