knowverseThe law of supply and demand determines the price where quantity supplied matches quantity demanded in a competitive market. The quiz covers the law of demand, inferior goods, market equilibrium, competitive markets, substitutes, complements, and how production costs shift supply. Try the ten questions now.
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In a competitive market, participant volume is high enough that each individual buyer or seller exerts a negligible influence over the prevailing price.
A competitive market is one where there are so many participants that no single person can control what happens.
From the Knowverse course text.
Price acts as an informative signal that tells buyers whether to consume and tells sellers how much to produce without direct communication.
In a market, the price isn't just a number on a tag; it is a signal.
From the Knowverse course text.
The Law of Demand establishes an inverse relationship: holding external factors constant, a higher price reduces the quantity buyers purchase.
The Law of Demand states that, other things being equal, when the price of a good rises, the quantity demanded falls.
From the Knowverse course text.
Demand for an inferior good falls as income rises, other things equal. The term describes an income-demand relationship and does not mean the good is defective or lower quality.
These are called inferior goods. For these items, demand actually decreases when your income rises.
From the Knowverse course text.
Because substitutes serve similar purposes, a price increase for one item drives consumers toward the cheaper alternative.
This relationship is direct: a price hike for Product A leads to higher demand for Product B.
From the Knowverse course text.
Complements are consumed together, so an increase in the price of one raises the total cost of ownership, lowering demand for the partner good.
As a result, an increase in the price of one lead to a decrease in the demand for the other.
From the Knowverse course text.
Because higher prices offer greater profit potential, sellers are motivated to increase the quantity supplied when prices rise.
The Law of Supply states that, as the price of a good rises, the quantity supplied of that good also rises.
From the Knowverse course text.
Higher input expenses reduce profit margins, making producers less willing or able to supply the same volume at existing prices.
When input prices rise, Marco's profit on each pizza shrinks, making him less willing to sell as many at the old price.
From the Knowverse course text.
Equilibrium occurs when the quantity sellers offer matches the exact quantity consumers want to buy at that price.
It happens when the market price reaches a level where the quantity supplied by sellers is exactly equal to the quantity demanded by buyers.
From the Knowverse course text.
At a price with excess demand, competition for limited stock creates upward price pressure. In the model, a higher price reduces quantity demanded and encourages quantity supplied.
The price will rise. As the price increases, some buyers will decide it is too expensive, reducing the demand until it matches the 20 available phones.
From the Knowverse course text.
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In a simple competitive market, many buyers and sellers trade similar goods, and each has little influence over the price. Prices carry information. A higher price gives sellers a reason to offer more while encouraging buyers to purchase less, holding the other conditions in the model constant.
A change in the good's own price changes quantity demanded. Income or the price of a related good can shift demand at every price. Demand for an inferior good falls as income rises. The label describes that relationship, without judging the product's quality. Substitutes offer alternatives, while complements are used together.
This signal coordinates the actions of buyers and sellers without them ever needing to speak to one another.
From the Knowverse course text.
Equilibrium is the price at which quantity supplied equals quantity demanded in this model. Above it, sellers offer more than buyers want to purchase. Below it, buyers want more than sellers offer. These are a surplus and a shortage respectively, both defined relative to the price being charged.
A surplus creates pressure for prices to fall, while a shortage creates pressure for them to rise. That describes the model's adjustment mechanism. It does not guarantee that every real market adjusts immediately or that every shop sells its inventory. Higher production costs can also reduce supply at a given price, changing where equilibrium lies.
It happens when the market price reaches a level where the quantity supplied by sellers is exactly equal to the quantity demanded by buyers.
From the Knowverse course text.
Sources: Market Forces. Each question or step includes an excerpt from the course.
