Draw the graph · Micro · Supply and demand
Buyers expect a price hike
Drag a curve sideways, or use its arrows. A curve you do not move is a curve you are saying stays put. Make each shift clear enough that a reader could see it.
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Demand shifts right. Supply stays put.
Expectations are a demand-side factor. If buyers expect higher prices soon, they want to buy now at every current price, so today's demand curve shifts right. Sellers' costs today are unchanged, so supply stays put. The higher price today moves sellers up along their supply curve.
Price rises and quantity rises.
Common mistake. Some students shift supply left because 'the tariff raises costs.' The tariff has not arrived. What changed today is buyers' expectations, and that moves demand.
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Lesson: Shifts in Demand