The demand curve for factors of production slopes downwards. This means that as the price of a factor of production (e.g. labor) decreases, the quantity demanded of that factor increases. Conversely, as the price of the factor of production increases, the quantity demanded decreases. This is because producers will demand less of a factor of production as its price increases, since they will be looking to minimize their costs and will seek out cheaper alternatives if available. However, they will be willing to purchase more of the factor of production as its price decreases, since it becomes relatively cheaper compared to other factors. This relationship is captured by the downward slope of the demand curve for factors of production.