anonymous
  • anonymous
Average rate of change question
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
misty1212
  • misty1212
HI!!
misty1212
  • misty1212
how many in 1995?

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anonymous
  • anonymous
16258
anonymous
  • anonymous
how many in 1991?
anonymous
  • anonymous
4493
anonymous
  • anonymous
anonymous
  • anonymous
Use the definition: Let \((a,f(a))\), and \((b,f(b))\) be two points on the graph of a function \(f\). Then the average rate of change of \(f(x)\) as \(x\) changes tfrom \(a\) to \(b\) is defined by \(\dfrac{\Delta y}{\Delta x}\) \(\dfrac{f(b) - f(b)}{b - a}\), \(a \ne b\). You may know this definition in this form: \(\dfrac{y_1 - y_1}{x_2 - x_1}\) You are given two points. \((1991, 4993)\); \((1995, 16258)\) Simply plug-in you given values, and you will get your average rate of change between those two points. (Also know as slope.)
anonymous
  • anonymous
I got 2941.25 as the average rate of change but it said it's incorrect.
anonymous
  • anonymous
@amistre64 Is there any chance you could tell me why my answer is incorrect?
amistre64
  • amistre64
hmm, 91 to 95 is 4 years 4993 to 16258 16258 4993 ------ 11265 is the change over 4 years is this what you got for the parts?
anonymous
  • anonymous
Oh! I made a silly mistake. Yep, 11265 is the right answer for part a, and 2816.25 is the answer for part b. Thanks so much!
amistre64
  • amistre64
yeah, thats what im getting :)

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