Verified answer

When supply increases, there will be obviously more supply in the market so the price for that good reduces.

For substitutes, the general rule is that when the price of one good increases, the quantity demanded for its substitute good increases. Take Coca-cola and Pepsi for example, both are of similar type of goods. If coca-cola were to increase its price, they may lose some customers who will then switch to Cola's substitute good (Pepsi). The price of a substitute good will not be affected, quantity supplied increase and quantity demanded for the substitute good increase.

For complements, when the price of good A increases, the quantity demanded decreases. For example, an XBox360 and XBox games are complements because they "need each other" to work. If the price of buying an XBox increases, less people will be willing to buy the XBox right? This will in turn, reduce the quantity demanded for XBox games