Question

I'm sincerely one baffled OpenStudier.

Answer 1

I'm given this, and the question is......
"Describe the relationship between pressure and temperature."
What on earth am I to say? Its not like this is science, but I'm clueless.

Answer 2

I guess you are studying what are functions?

Answer 3

in this example, I think we take pressure to be the "x" values
and temperature is the y value

to describe the relation, you list the "domain" which is the set of x values
(no repeats) and sorted small to big would look better

and range, which is the set of y values (no repeats)

then draw an arrow from each domain value to its range value (if it goes to more than 1 value, show that)

Answer 4

see http://www.purplemath.com/modules/fcns.htm
and scroll down to the examples.

In this example, some of the "x" values (i.e. pressures) go to 2 different y values
that shows: 1) this relation is not a function.

Answer 5

Hmmm, I took a different approach with this. I assume that there is some relationship that exists between temperature and pressure. From my observation, it seems that generally as pressure decreases, temperature tends to increase and vice versa. I essentially disregarded the 5th entry and treated it as an "outlier" since it doesn't fit with the general trend.

Answer 6

Nevertheless, the relationship is not a function.

Answer 7

@Hero
@phi
Thank you both for replying so detailed! ^.^
Now quick question....to whomever can answer.
How would I know that the relation is not a function? What am I specifically looking for that represents that?

Answer 8

A relation is a function if each input has only one output. Keep in mind that the opposite doesn't need to be true. Assuming pressure is the input for your question and temperature is the output, the relation is not a function because you have two different temperatures for both 995 and 1006 millibars.

Answer 9

Thank you @peachpi
I truly appreciate it. ^.^