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| n |
If
dentistry is a normal
good then if a
consumers’ income
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rises
they will buy more treatment at each price, and if it
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falls they will
buy less.
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| n |
Demand
for goods and services is also affected by changes
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in
prices of complementary
goods. These are
goods and
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|
services
which tend to be bought together. For instance, if
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the
price of eye tests rose significantly, then many people
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|
would
not bother to get their eyes checked regularly. This
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|
would
lead to a fall in the demand for spectacles.
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| n |
Whenever
income, preferences or the price of a related
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good
or service changes, the demand curve shifts
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