algebra

posted by .

I'm a little confused on how to solve this:

The number of cricket chirps per minute is given by
N(t) = 7.2t - 32
Where t is the temperature in degrees Celsius.

a. Graph the equation N(t) = 7.2t - 32

I have learned a few ways to graph equations. One way would be to use -32 as the y-intercept and from there go up 7.2, over 1, etc. The other way would be to pick an x, or in this case, t value, multiply it by 7.2, subtract 32, and that would be the y value. I have tried both ways and gotten different results, so which way would be correct?

Thank you very much! Any help is appreciated!

  • algebra -

    both ways are correct, you must have made an error

    method 1 - slope y-intercept
    one point is obviously (0,-32)
    now from there go up 7.2 then to the right 1
    this would give you (1,-24.8)
    join these two points

    method 2: finding random ordered pairs

    let t = 1, N(1) = 7.2-32 = -24.8 -- (1,-24.8)
    let t = 3 N(3) = -10.4 --- (3,-10.4)
    join these points, bet you get the same line

  • algebra -

    Thank you so much!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    the chiring rate of crickets of some species is related to temperature, and the relationship appears to be very near linear. A cricket produces 113 chirps per minute at 70 degrees farenheit and 173 chirps per minute at 80 degrees farenheit. …
  2. college algebra

    Erin is a biology student. She heard that the number of times a cricket chirps in one minute can be used to find the temperature. In an experiment, she finds that a cricket chirps 40 times per minute when the temp. is 50 degrees(Fahrenheit) …
  3. math

    Suppose that C is the number of chirps a cricket makes every 15 seconds. Using the formular C = T - 40, A. How many chirps does the cricket do at 70 degrees fahrenheit?
  4. math

    Biologists have noticed that the chirping rate of crickets of certain species is related to temperature, and the relationship appears to be very nearly linear. A cricket produces 113 chirps per minute at 70 degrees Fahrenheit and 173 …
  5. regression

    You have heard about but never took seriously the Old Farmer’s Almanac claim that you can tell the temperature of the air by counting the number of cricket chirps in 1 minute. You decide to test the claim so one night when the temperature …
  6. Applied Calculus......

    Suppose a snowy-tree cricket chirps 180 times per minute if the temperature is 102 degrees, and chirps 120 times per minute when the temperature is 90 degrees. Construct a mathematical model that will predict the number of chirps per …
  7. math

    Biologists have noticed that the chirping of crickets of a certain species is related to temperature, and the relationship appears to be very nearly linear. A cricket produces 119 chirps per minute at 67 degrees Fahrenheit and 172 …
  8. math help DX

    a scientist theorized that you can estimate the temperature by counting how often crickets chirp. the scientist gathers the data in the table shown. A)how many cricket chirps would you expect to indicate a temperature of 85 degrees?
  9. math-algebra HELP!!!!

    a scientist theorized that you can estimate the temperature by counting how often crickets chirp. the scientist gathers the data in the table shown. A)how many cricket chirps would you expect to indicate a temperature of 85 degrees?
  10. calculus

    The Snowtree cricket behaves in a rather interesting way: The rate at which it chirps depends linearly on the temperature. One summer evening you hear a cricket chirping at a rate of 160 chirps/minute, and you notice that the temperature …

More Similar Questions