Laura Romero Post #2 What is your function?

Part A.
1.  The Washington Post
2.  A function is a relationship where each input has exactly one output. It can be tested with the vertical line test. If a vertical line is drawn through the graph at any point, it should not touch it in more than one point.
3

Bitcoin price fall over three months

Bitcoin price as tracked via the CoinDesk Bitcoin Price Index.

586.76

0

200

400

600

Jul 06

13

20

27

Aug 03

10

17

24

31

Sep 07

14

21

28

Oct 05

586.76

Aug 04 - 12:00 AM

Source: CoinDesk

The Washington Post.            4.  This chart shows the Bitcoin price changes in the last few months. For every point in time, there is a different price for the Bitcoin stocks. There is one output per input.
5. This function is not linear, because the ARC (average rate of change)  is not constant throughout the graph. Bitcoin's stock prices are not stable. This can be seen in the line of the graph which has no pattern of growth or decay.
6. Lastly, the function is not a mathematical model because the output (price of Bitcoin) is not affected by input (time), or vice-versa.

Part B.
1. A relationship is not a function when there is more than one input per output.
2. The Washington Post

3. This relationship shows that as the years pass, and countries develop more, their development slows down, and the change in the patterns of economic growth of emerging markets.

4. This relationship is not a function because there is more than one output per input. Every year, there are different figures for growth, and different countries coupled in the same graph.

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