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Translate word problem to equation

  1. Aug 26, 2013 #1
    1. The problem statement, all variables and given/known data
    We know relationship between temp and number of chirps per minute is linear. 113 chirps per minute at a 70degrees F. 173 chirps per minute at 80 degrees F.


    2. Relevant equations
    In this problem why do we put degrees on top of chirps in finding the slope.


    3. The attempt at a solution
    I understand that it would be 80-70/(173-113) because my original answer didnt seem right. Im just curious as to how to know logically through the problem that I would put the chirps on bottom not on top to begin with
     
  2. jcsd
  3. Aug 26, 2013 #2

    LCKurtz

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    Technically you could do it either way. In this problem, the way it is phrased, it says when the temp is 70 you get 113 cpm and when the temp is 80 you get 173 cpm. So it is suggesting that chirps/minute is a function of temperature. That would suggest temperature is the dependent variable.

    The real answer to your question may be in the statement of the problem where it asks you to calculate something. You never stated the question that you were asked to solve in part 1 of the homework template. If I knew that I might be able to give a better answer.
     
  4. Aug 26, 2013 #3

    berkeman

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    What's a chirp?

    Oops, LKC beat me to it...
     
  5. Aug 26, 2013 #4
    Thank you lkc. You are right, in the question it says right a function that models temp t as a function of chirps per minute N. Thank you.
     
  6. Aug 26, 2013 #5

    SteamKing

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    No birds or crickets where you live?
     
  7. Aug 27, 2013 #6

    LCKurtz

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    You, of all people, should know. It's a cw signal when the frequency isn't stable. :cool:
     
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