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Markets and Market Research

Supply and the supply curve

  • 3 things to know
  • AS Unit 1

Overview

Shape and slope of a typical supply curve, why supply curves normally slope upwards and movement along and a shift of the supply curve.

What you need to know

Answer each one before you reveal it.

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Key term

Describe the shape and slope of a typical supply curve.

Key term

Explain why supply curves normally slope upwards.

Key term

Distinguish between a movement along and a shift of the supply curve.

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What is meant by supply?

    Model answer

    Supply is the quantity of a product that producers are willing and able to offer for sale at each possible price over a period of time.

  2. 2

    Describe the shape and slope of a typical supply curve.

    Model answer

    A supply curve slopes upward from left to right, showing that a higher price is associated with a greater quantity supplied.

  3. 3

    Explain why supply curves normally slope upwards.

    Model answer

    A higher price makes production more profitable, so existing firms produce more and firms whose costs were too high to supply at the old price now enter the market.

  4. 4

    Distinguish between a movement along and a shift of the supply curve.

    Model answer

    A movement along the supply curve is caused only by a change in the product's own price, while a shift is caused by any other factor and changes the quantity supplied at every price.

  5. 5

    Which way does the supply curve move when supply increases?

    Model answer

    It shifts to the right, so a greater quantity is supplied at every price.

  6. 6

    Name six factors that cause the supply curve to shift.

    Model answer

    The costs of production, the state of technology, taxes on production, subsidies, the number of firms in the market, and events such as weather or disruption all shift supply.

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