Blog Post #2 unemployment lst 20+ years
Part A
- http://research.stlouisfed.org/fred2/series/LNS14000024
- A Function must pass the vertical line test. Also, there needs to be one output for every input
- this graph is a function because it shows the relationship between recessions and the percent of the nation that was unemployed over the last 20 years.
- Every time there was a U.S. recession the percent of unemployment increased. In times without any recession unemployment was much lower.
- This graph is not linear because it is not a straight line.
- N/A
- The rate of change for this graph is not consistent. The points likewise do not line up.
- This is not a mathematical model because output(percent unemployed) is not determined on what year it is but rather the extent of depression the country is in.
Part B
- The relationship is not a function if there is more than one output per input.
- http://hamptonroadsperforms.org/indicators/governmentCitizens/voter-registration.php
- this relationship shows the percent of turnout for multiple areas over the years.
- this is not a function because there are multiple inputs for each output.
I think that your answer for number five of part a is too circular and doesn't actually explain what a linear function is.
ReplyDeleteHi Shannon! Your graph within Section A I found to be very interesting, nice find on that. That said, I felt your answer to Section A, Number 7 could have used more detailing. Maybe you could have supplied to definition of the average rate of change, as it would have allowed your answer to shine with greater clarity.
ReplyDeleteHi Shannon, I have to agree with both Rachel and Sam, I think that both 5 and 7 could use more explanation. While you are correct that it is not linear, you should probably explain it in more mathematical terms (rate of change, and vertical line test).
ReplyDeleteshannon,
ReplyDeleteyou picked a nice example and most of your explanations are accurate. however, it would have been nice to see calculations and more details when explaining whether or not your example was a linear relationship or not. additionally, for the last part, you forgot to use function notation when explaining the math model part. other than that, nice job.
your second example, however, shows the relationships of many separate functions. so this does not qualify as a NON function.
prof little