Blog 2 Functions

Part a:

http://themcgowangroup.com/wp-content/uploads/chart-12.png

1.       As Years increase average GDP growth changes

2.       The relationship is a Function

3.       This chart is a function because it passes the vertical line test and each year (input) leads to a single output.

4.       The function G=f(Y) is not a mathematical model as it does not follow a trend because the year does not result in a specific GDP figure.

Part b:

1.        http://blog.chron.com/climateabyss/files/2011/08/txsummno11-600x463.gif

It shows the relationship between average temperatures and total rainfalls.

2.       It is not a function since many of the inputs do not equal single outputs, and it as such does not pass the vertical line test. (The trend line is not relevant to this relationship in this sense.)