anonymous
  • anonymous
The table below represents the atmospheric temperature at a location as a function of the altitude:
Mathematics
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
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anonymous
  • anonymous
The average rate of change of the function between x = 15 to x = 25 is ___degrees Celsius per thousand feet and represents the rate of change of temperature per thousand feet.
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anonymous
  • anonymous
please help
kropot72
  • kropot72
Have you made a graph of f(x) against x ?

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anonymous
  • anonymous
yes
anonymous
  • anonymous
i don't know if i got the answer right so i wanna make sure
kropot72
  • kropot72
What is the shape of your graph?
anonymous
  • anonymous
The shape?
kropot72
  • kropot72
Is the graph a curve for example?
anonymous
  • anonymous
oh ok
anonymous
  • anonymous
1 sec
anonymous
  • anonymous
The points were (15,4), (20,-6), (25, -16)
anonymous
  • anonymous
plz help @kropot72
kropot72
  • kropot72
When those points are plotted and joined, what is the shape of the graph?
anonymous
  • anonymous
it is a diagonal line
anonymous
  • anonymous
its stright
anonymous
  • anonymous
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anonymous
  • anonymous
like this
kropot72
  • kropot72
Correct, it is a straight line with a negative slope. Therefore the calculation of the average rate of change of temperature with altitude is very simple: \[-(\frac{change\ of\ temp.}{change\ of\ altitude})\]
anonymous
  • anonymous
ok
anonymous
  • anonymous
so would it be -2?
kropot72
  • kropot72
Correct, -2 deg. Celsius / thousand feet.
anonymous
  • anonymous
thanks
kropot72
  • kropot72
You're welcome :)

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