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anonymous

  • one year ago

Plz Help!! Find the slope of a line on a graph (-2,-1), (-4,4)

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  1. anonymous
    • one year ago
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    @dan815

  2. anonymous
    • one year ago
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    i know u gave me the formula i dont understand it though

  3. anonymous
    • one year ago
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    you can totally do this! \[\frac{ y-y_1 }{ x-x_1 }\] just plug in the numbers...

  4. anonymous
    • one year ago
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    um....i cant lol im not smart

  5. anonymous
    • one year ago
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    (-2,-1) and (-4, 4)...let's start with what are your y-coordinates?

  6. anonymous
    • one year ago
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    coordinates/ordered pairs are always written as (x,y).

  7. anonymous
    • one year ago
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    1 and 4

  8. anonymous
    • one year ago
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    check again...negatives matter

  9. anonymous
    • one year ago
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    -1,4?

  10. anonymous
    • one year ago
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    bingo! ok, so let's plug that in...\[\frac{ y-y_1 }{ x-x_1 }=\frac{ -1-4 }{ x-x_1 }\]

  11. anonymous
    • one year ago
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    now let's figure out our x-coordinates...

  12. anonymous
    • one year ago
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    then -2,4

  13. anonymous
    • one year ago
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    your coordinates are (-2,-1) and (-4,4) so I agree with -2 being an x-coordinate, but what's the first number in the 2nd set of coordinates?

  14. anonymous
    • one year ago
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    @Whalexnuker

  15. anonymous
    • one year ago
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    -4

  16. anonymous
    • one year ago
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    ok, so this is the tricky part...

  17. anonymous
    • one year ago
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    \[\frac{ -1-4 }{ -2--4 }\]

  18. anonymous
    • one year ago
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    do you see how -1 is the first number on top and -2 is the first number on the bottom? That's because those 2 numbers go together (-2,-1)

  19. anonymous
    • one year ago
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    there is only one -4

  20. anonymous
    • one year ago
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    ya

  21. anonymous
    • one year ago
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    the denominator (bottom) says -2 minus -4

  22. anonymous
    • one year ago
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    oh lol srry

  23. anonymous
    • one year ago
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    it's ok :) do you know how to subtract negative numbers?

  24. anonymous
    • one year ago
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    ya

  25. anonymous
    • one year ago
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    -6

  26. anonymous
    • one year ago
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    after this i have one more

  27. anonymous
    • one year ago
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    -2-(-4) isn't going to equal -6. that would be true if you were adding, but you're subtracting.

  28. anonymous
    • one year ago
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    subtracting a negative is like adding a positive...so instead of -2-(-4) think -2+4

  29. anonymous
    • one year ago
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    oh so then 2

  30. anonymous
    • one year ago
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    perfect, what about the top number?

  31. anonymous
    • one year ago
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    -1-4

  32. anonymous
    • one year ago
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    -5

  33. anonymous
    • one year ago
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    so put it all together and you have your slope! -5/2

  34. anonymous
    • one year ago
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    thnk you so much

  35. anonymous
    • one year ago
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    you are so very welcome! I wish I could stay and help more, but I have work in the morning. Good luck on the rest of your problems!

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