Describe all of the elasticity types and give some samples of elasticity types?

What are someproducts that happen within an economic market, categorize and describe their 'elasticity?'

Describe what would take place if:

a. income increased

b. loss of job

c. a substitute was introduced

d. there was a sudden shortage of the product

Explain, describe and give an idea for each of the following words?

a. Unitary Elastic

b. Perfect Inelasticity

c. Income Elasticity of Demand

d. Cross Elasticity of Demand