What is the #DemandCurve in #Economics?

18 May

Let’s say that Mike is buying pencils from Metro (Màidélóng)

We want to know what price should Metro charge?

Demand Curve.jpg

This picture is very helpful! The Green Line tells us how many pencils Mike will buy at each price.

Situation #1: The price is $3.00, Mike is willing to buy 50 pencils.

Situation #2: The price is $1.00, Mike is willing to buy 70 pencils.

Situation #3: The price is $4.00 and Metro has 30 pencils. Will Mike buy them?

Answer: Yes! Mike wants 40 pencils, of course he would buy 30 if they are available.

Situation #4: The price is $4.00 and Metro has 50 pencils. Will Mike buy them?

Answer: No! Mike only wants 40 pencils, so he is never going to buy 50.

So we could draw the picture like this:

Demand Possibility.jpg

So what is the Demand Curve?

  • It tells us the MAXIMUM number of products Mike will buy at each price.
  • It tells us how many products Mike will NOT buy.
  • It gives us an idea of what price we should choose. For example, if the price is $8.00, Mike won’t buy any pencils!

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