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anonymous

  • one year ago

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

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  1. anonymous
    • one year ago
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  2. jim_thompson5910
    • one year ago
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    We have three points: (10,27), (11,m), (12,11) Let's pick two of them, say (10,27) & (11,m)

  3. jim_thompson5910
    • one year ago
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    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

  4. jim_thompson5910
    • one year ago
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    I'll let you do this part. Tell me what you get

  5. anonymous
    • one year ago
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    m=19 Can you help me with more? @jim_thompson5910

  6. jim_thompson5910
    • one year ago
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    m = 19 is correct

  7. jim_thompson5910
    • one year ago
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    sure I can help

  8. anonymous
    • one year ago
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    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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  9. jim_thompson5910
    • one year ago
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    you'll use the slope formula again you can pick two points, say (4,0) and (8,10)

  10. jim_thompson5910
    • one year ago
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    (x1,y1) = (4,0) x1 = 4 y1 = 0 -------------- (x2,y2) = (8,10) x2 = 8 y2 = 10

  11. anonymous
    • one year ago
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    okay I'm using it now

  12. anonymous
    • one year ago
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    @jim_thompson5910 I got -10... bur I think I messed up >.<

  13. jim_thompson5910
    • one year ago
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    what is y2 - y1 equal to?

  14. anonymous
    • one year ago
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    10

  15. jim_thompson5910
    • one year ago
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    how about x2-x1

  16. anonymous
    • one year ago
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    2/5 .. is that the answer >.<

  17. jim_thompson5910
    • one year ago
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    you got it flipped

  18. jim_thompson5910
    • one year ago
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    the y difference goes over the x difference

  19. jim_thompson5910
    • one year ago
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    10/4 = 5/2

  20. anonymous
    • one year ago
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    Ohhh okay thank you

  21. jim_thompson5910
    • one year ago
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    np

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