Carolyn
Schneider
2/9/15
Blog Post #2
Part
A
I
found a periodical that gave the statistics for Marshawn Lynch’s rushing yards
from 2007-2014.
The
relationship is between the year and the rushing yards. Rushing yards are a
function of year.
The
function is not linear; if it were graphed, it would rise and fall depending on
how many yards Marshawn rushed that year. In other words, the slope, or rate of
change, is not constant. There is no given formula that would result in these
values.
The
function is not a mathematical model because the outputs (rushing yards) do not
depend on the inputs (year).
Part
B
Next,
I found a graph of the decline of China’s economy.
http://www.economist.com/news/finance-and-economics/21618913-after-sharp-slowdown-stimulus-back-agenda-test-will
There
are three relationships to look at: property sales, investment, and industrial production.
They’re graphed over a period of time (x axis), in changing percentages from
2009 to 2014. So this shows the relationship between time and the percentage of
change in the Chinese economy.
The
relationship is not a function, because each year has multiple outputs.
Your table of Lynch's running yards is a great function example. Also, a good explanation of how the graph would look as well.
ReplyDeleteIt's interesting of how the Chinese economy is declining, I thought it was doing better.
ReplyDeleteYour table is a really good example of a function and it's so interesting to see.
ReplyDeleteI like your use of football examples! It is a relevant topic since the Super Bowl was just recently on tv!
ReplyDeleteI think that your graph of the different areas of the Chinese economy may be considered a function... There are multiple lines being graphed on one graph, but they each represent a different set of information. What are your thoughts?
ReplyDeletebrenna,
Deletegood observation! =] the second example shows the relationship of three separate functions.
professor little
carolyn,
ReplyDeleteyour first example is done well and nice job of using a sports example! the only thing missing in your explanation is to express the relationship using function notation.
your second example shows three separate relationships that are functions of time. so it is not a non function.
professor little