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spidergirl51

  • one year ago

(-3 and 4) and (3,-4) find the slope

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  1. zaynahf
    • one year ago
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    Use slope formula: \[m = \frac{ y _{2}- y _{1} }{ x _{2}-x _{1} }\] Using the points: (-3 and 4) and (3,-4) \[y _{2}= -4, y _{1}= 4\]\[x _{2}= 3 , x _{1}= -3\]

  2. spidergirl51
    • one year ago
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    i did

  3. zaynahf
    • one year ago
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    What did you get?

  4. spidergirl51
    • one year ago
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    i got -4/3

  5. spidergirl51
    • one year ago
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    |dw:1357701162432:dw|

  6. zaynahf
    • one year ago
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    Ok start with the top: what is -4 -4?

  7. spidergirl51
    • one year ago
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    -8

  8. ChmE
    • one year ago
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    why is that not right. looks good to me

  9. zaynahf
    • one year ago
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    And the bottom?

  10. spidergirl51
    • one year ago
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    6

  11. spidergirl51
    • one year ago
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    then isimplifed

  12. spidergirl51
    • one year ago
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    i need the y intercept as well

  13. zaynahf
    • one year ago
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    Im sorry.. i forgot to reduce it.. you were right. It is -8/6, or -4/3

  14. zaynahf
    • one year ago
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    Then you need to use point slope form

  15. spidergirl51
    • one year ago
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    oh

  16. spidergirl51
    • one year ago
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    hmm

  17. spidergirl51
    • one year ago
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    idk

  18. zaynahf
    • one year ago
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    \[y - y _{1}= m ( x - x _{1})\]

  19. spidergirl51
    • one year ago
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    i know that

  20. spidergirl51
    • one year ago
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    i dont know how to solve it

  21. zaynahf
    • one year ago
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    Now plug in the points and the slope

  22. spidergirl51
    • one year ago
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    so

  23. spidergirl51
    • one year ago
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    y-4=-4/3(x-3)

  24. spidergirl51
    • one year ago
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    right

  25. zaynahf
    • one year ago
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    Which point did you use?

  26. spidergirl51
    • one year ago
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    -3 and 4

  27. spidergirl51
    • one year ago
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    (-3,4)

  28. zaynahf
    • one year ago
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    Ok for the last part, it would be x + 3 because of hte double negative

  29. spidergirl51
    • one year ago
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    oh okay then wat

  30. zaynahf
    • one year ago
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    Now distribute the right side, and isolate the y

  31. spidergirl51
    • one year ago
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    can u help me with it

  32. zaynahf
    • one year ago
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    Do you know how to distribute?

  33. spidergirl51
    • one year ago
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    yes i got -4/3x-4

  34. spidergirl51
    • one year ago
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    when i distrubute

  35. zaynahf
    • one year ago
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    Ok, now carry over the # on the left

  36. spidergirl51
    • one year ago
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    what u mean can ushow me

  37. zaynahf
    • one year ago
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    y - 4 = -4/3x - 4 +4 +4 ------------------ Solve that

  38. spidergirl51
    • one year ago
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    its o

  39. zaynahf
    • one year ago
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    Y-int, right?

  40. spidergirl51
    • one year ago
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    yeah

  41. zaynahf
    • one year ago
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    Then you're done

  42. spidergirl51
    • one year ago
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    thanks

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