EMMA WALL Blog Post 2: Conjunction Junction, Whats your function

4.     Explain in words the meaning of this relationship.

Cince the year 1978, the ice extent is decreasing. It is a function because there is one x for every y. 

5.     Determine whether the function is a linear function. 

The trend line is a linear function

6.     If the function is linear, explain in detail how you know the function is linear (be sure to refer to the average rate of change). 

Because a trend line is drawn, it is the average rate of change over time, meaning the decreasing rate of change is linear.

8.     Determine whether the function is a mathematical model (be sure to use function notation.)

The function is a mathematical model because it is composed of relationships and variables which constitute a function.

Part b:

1.   .

2NOT A FUNCTION

3.     Explain in words the meaning of this relationship.

This compares the price of a Big Mac to whether an average citizen can afford said Big Mac. 

4.     Explain in detail how you know the relationship is not a function.

This does not qualify as a function because it fails the vertical line test, therefore, there is not one x for every y.