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

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Question 1080130: 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 josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
(0, 28) and (2000, -8) data points, (height position, temperature).

y-28=%28%28-8-28%29%2F%282000-0%29%29%28x-0%29

-
y-28=-%2836%2F2000%29x
y=-%289%2F500%29x%2B28

Let x=2500.
y=-%289%2F500%292500%2B28
highlight%28y=-17%29