Video: Demand Curve This question is based on the video Demand Curve. If you have not previously viewed this video please do so by clicking the link. Other things remaining the same, the law of demand says that if the price of a good rises: ANSWER Unselected the quantity demanded increases and if the price of a good falls the quantity demanded decreases. Unselected the quantity demanded decreases and if the price of a good falls, the quantity demanded increases. Unselected the quantity demanded decreases and if the price of a good falls the quantity demanded decreases. Unselected the quantity demanded increases and if the price of a good falls the quantity demanded increases