anonymous
  • anonymous
I medal! :> In order for the data in the table to represent a linear function with a rate of change of –8, what must be the value of m? m = 2 m = 3 m = 19 m = 35
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
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jim_thompson5910
  • jim_thompson5910
We have three points: (10,27), (11,m), (12,11) Let's pick two of them, say (10,27) & (11,m)
jim_thompson5910
  • jim_thompson5910
You plug those coordinates into the slope formula \[\Large Slope = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}\] \[\Large Slope = \frac{m-27}{11-10}\] replace "slope" with -8 because this is what we want the slope to be \[\Large -8 = \frac{m-27}{11-10}\] from here you solve for m

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jim_thompson5910
  • jim_thompson5910
I'll let you do this part. Tell me what you get
anonymous
  • anonymous
m=19 Can you help me with more? @jim_thompson5910
jim_thompson5910
  • jim_thompson5910
m = 19 is correct
jim_thompson5910
  • jim_thompson5910
sure I can help
anonymous
  • anonymous
Ellen makes and sells bookmarks. She graphs the number of bookmarks sold compared to the total money earned. What is the rate of change for the function graphed to the left? 2/5 5/4 5/3 5/2
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jim_thompson5910
  • jim_thompson5910
you'll use the slope formula again you can pick two points, say (4,0) and (8,10)
jim_thompson5910
  • jim_thompson5910
(x1,y1) = (4,0) x1 = 4 y1 = 0 -------------- (x2,y2) = (8,10) x2 = 8 y2 = 10
anonymous
  • anonymous
okay I'm using it now
anonymous
  • anonymous
@jim_thompson5910 I got -10... bur I think I messed up >.<
jim_thompson5910
  • jim_thompson5910
what is y2 - y1 equal to?
anonymous
  • anonymous
10
jim_thompson5910
  • jim_thompson5910
how about x2-x1
anonymous
  • anonymous
2/5 .. is that the answer >.<
jim_thompson5910
  • jim_thompson5910
you got it flipped
jim_thompson5910
  • jim_thompson5910
the y difference goes over the x difference
jim_thompson5910
  • jim_thompson5910
10/4 = 5/2
anonymous
  • anonymous
Ohhh okay thank you
jim_thompson5910
  • jim_thompson5910
np

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