If the supply curve shifts upward, meaning supply decreases but demand holds steady, the equilibrium price increases but the quantity falls. ... If the supply curve shifts downward, meaning supply increases, the equilibrium price falls and the quantity increases.
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If the supply curve shifts upward, meaning supply decreases but demand holds steady, the equilibrium price increases but the quantity falls. ... If the supply curve shifts downward, meaning supply increases, the equilibrium price falls and the quantity increases.