It will look like this below: 'QxS = f(p)' Where: n QxS = quantity supplied of commodity/good x by the producers n Px = price of commodity/good x n f =function of. For example, given that the linear equation is Qs = -60 + 30P, If the price(P) is zero, the quantity supplied will be negative number which indicates no supplier will be willing nor able to produce such product at a zero price. At a price of P=2, the quantity supplied will be zero which means producer will be willing and able to produce at a price higher than P=2. [9] By combining this formula explaining the Law of Supply with another microeconomic concept called Law of Demand, we can induce the equilibrium price of certain market by using simultaneous equation. For example, the equation for supply is Qs = -60 + 30P [9] And the equation for the demand is Qd = 180 – 20P [9] Equilibrium Price is where Qs is being equal to Qd, so the simultaneous equation will be look like: Qs = Qd Qs = -60 + 30P Qd = 180 – 20P -60 + 30P = 180 – 20P [9] To solve the equation, by using transposition, put Ps at the left-hand side and other constants at the right-hand side, then it will be: 50P = 240/50p P = 4.8 [9] We can then obtain the knowledge that the equilibrium price of this specific good or service will be at price of 4.8 To be more specific, this means that the equilibrium price for the goods at the market is $4.00. If the producer lowers the price below $4.00, an excess in demand would cause the buyers to want more pineapples than the fruit stand can sell. If the supplier raises the price above $4.00, an excess in supply would cause buyers to want fewer pineapples than the fruit stand can sell. If the fruit stand keeps the price of their pineapples at $4.00, then there is a balance between supply and demand which is good for both the buyers and the fruit stand. [9] ] Supply curve Law of supply can be depicted with graphs as well. (Source 3.1) Graph above shows the concept of Law of Supply with shape of upward slopping linear graph showing if the price increases quantity supplied will increase together. There are two types of movement of