SOLUTION: The temperature of air at 2000 metres is -8 degrees C. At ground level the temperature is 28 degrees C. The temperature changes at the same rate every 1000 metres. What is the temp

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: The temperature of air at 2000 metres is -8 degrees C. At ground level the temperature is 28 degrees C. The temperature changes at the same rate every 1000 metres. What is the temp      Log On


   

Question 1080140: The temperature of air at 2000 metres is -8 degrees C. At ground level the temperature is 28 degrees C. The temperature changes at the same rate every 1000 metres. What is the temperature at the height of 2500 metres?
Answer by FrankM(1040) About Me  (Show Source):
You can put this solution on YOUR website!
X=0, Y=28
X=2000 Y=-8
Change in Y (-36) over change in X (2000) = -36/2000
Y-Y1=m(X-X1)
Y-28=-36/2000(X)
Y= -.018X+28
At 2500,
Y=-.018(2500)+28

Y= -17C