Homework Help: algebra

Posted by Celina on Tuesday, December 16, 2008 at 4:24pm.

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 - Reiny, Tuesday, December 16, 2008 at 5:24pm
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 - Celina, Tuesday, December 16, 2008 at 7:17pm
Thank you so much!

Answer this Question

Related Questions

college algebra - Erin is a biology student. She heard that the number of times ...
math - Suppose that C is the number of chirps a cricket makes every 15 seconds. ...
math - Biologists have noticed that the chirping rate of crickets of certain ...
regression - You have heard about but never took seriously the Old Farmer’s...
math - the chiring rate of crickets of some species is related to temperature, ...
Applied Calculus...... - Suppose a snowy-tree cricket chirps 180 times per ...
Chemistry - In cool weather, the number of chirps per minute from crickets ...
algebra - The value, v, of a shopkeepers inventory software program is given by ...
College Math - The "learning curve" describes the rate at which a ...
ALGEBRA/PLEASE HELP - have the answer and would love confirmation. VERY ...

For Further Reading

First Name:
School Subject:
Answer: