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anonymous

  • one year ago

Help The following graph shows the quantity of pencil sales (s) with respect to the day in August (d) in various office supply stores. Which of the following is most likely to be the equation of the trend line? http://prntscr.com/8ldvag http://prntscr.com/8ldvkh

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  1. anonymous
    • one year ago
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    @imqwerty

  2. baru
    • one year ago
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    do you know "slope"?

  3. anonymous
    • one year ago
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    yea

  4. baru
    • one year ago
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    so if you are given the equation of a line y=mx +c, can you recognize what its slope is?

  5. anonymous
    • one year ago
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    the slope would be m

  6. baru
    • one year ago
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    yep, now what you have to do is : that the four options are in the form y=mx +c, except you have "s" instead of y, and "d" instead of x

  7. baru
    • one year ago
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    so re-arrange the equations till you get them in y=mx +c form

  8. baru
    • one year ago
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    with me so far?

  9. anonymous
    • one year ago
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    yes but you put + its meant to be - there is no + in the answers given

  10. baru
    • one year ago
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    think of it this way: the varibles m and c can be positve or negative, so you might get y=mx +c or y=-mx-c or y=mx-c too

  11. baru
    • one year ago
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    if you have got y= -mx + c it just means that the slope is a negative number

  12. baru
    • one year ago
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    making sense?

  13. anonymous
    • one year ago
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    so the final answer would be c?

  14. baru
    • one year ago
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    you mean the third option? for the first question... no

  15. anonymous
    • one year ago
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    so its the last option?

  16. baru
    • one year ago
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    yep

  17. anonymous
    • one year ago
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    ok and any idea on the second one?

  18. anonymous
    • one year ago
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    @hartnn

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spraguer (Moderator)
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