Sunday, November 13, 2011

Ch1 Real World Functions

In this function, countries and their populations in 2010 are being compared.
A function is when the values of the domain produce only 1 range value.
A relation is a set of ordered pairs.
In the function, each country only has 1 population.
It fails as a function when the countries have more than 1 population, which is impossible. It becomes a relation.
The independent variables are the countries.
The dependent variables are their populations.
The domain is {China, India, US, UK, Russia, Mexico}
The range is [100k, 1.3m] because the lowest population in the 6 countries chosen is 100k(U.K) and the highest is 1.3m(China).

1 comment:

Rori Abernethy said...

Talk to me about this tomorrow Ivan and I'll help you.