Economic : Demand

The four basic laws of supply and demand are:^[1]

1. If demand increases and supply remains unchanged, then it leads to higher equilibrium price and quantity.
2. If demand decreases and supply remains unchanged, then it leads to lower equilibrium price and quantity.
3. If supply increases and demand remains unchanged, then it leads to lower equilibrium price and higher quantity.
4. If supply decreases and demand remains unchanged, then it leads to higher price and lower quantity.