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jessiegonzales

  • one year ago

MEDAL!! Write an equation of the line, in point-slope form, that passes through the two given points. (-2,15) (9,-18) y-2=-3(x-15) y-2=-1/3(x+15) y-15=-3(x+2) y-15=-1/3(x+2)

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  1. anonymous
    • one year ago
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    a) find the slope what do you get?

  2. jessiegonzales
    • one year ago
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    ok so 15-18 -2-9

  3. anonymous
    • one year ago
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    oh no

  4. jessiegonzales
    • one year ago
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    -3/-11

  5. anonymous
    • one year ago
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    careful here

  6. anonymous
    • one year ago
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    \[\huge \frac{\color{red}{y_2}-\color{green}{y_1}}{(\color{blue}{x_2}-\color{orange}{x_1})}\]

  7. anonymous
    • one year ago
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    \[\color{orange}{x_1}=\color{orange}{9}\] \[\color{blue}{x_2}=\color{blue}{-2}\] \[\color{green}{y_1}=\color{green}{15}\] \[\color{red}{y_2}=\color{red}{-18}\]

  8. anonymous
    • one year ago
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    remember the sign comes with the number

  9. jessiegonzales
    • one year ago
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    7/-3

  10. anonymous
    • one year ago
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    so for example your numerator should be \[15-(-18)\] not \[15-18\]

  11. jessiegonzales
    • one year ago
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    oh

  12. anonymous
    • one year ago
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    and similarly, your denominator should be \[-2-9\]

  13. jessiegonzales
    • one year ago
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    which is -7

  14. anonymous
    • one year ago
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    \[-2-9\neq -7\]

  15. anonymous
    • one year ago
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    \[2-9=-7\] but not \(-2-9\)

  16. jessiegonzales
    • one year ago
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    oh I'm confused now

  17. anonymous
    • one year ago
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    i think the arithmetic is throwing you off lets do the top first what is \[15-(-18)\]?

  18. anonymous
    • one year ago
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    if that is not clear, let me know and i will tell you

  19. jessiegonzales
    • one year ago
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    33

  20. anonymous
    • one year ago
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    yes ok good now on to the denominator

  21. anonymous
    • one year ago
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    denominator is \[-2-9\]

  22. jessiegonzales
    • one year ago
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    ok

  23. anonymous
    • one year ago
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    do you know what that is hint: it is NOT \(-7\)

  24. jessiegonzales
    • one year ago
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    -11

  25. jessiegonzales
    • one year ago
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    33/-11

  26. anonymous
    • one year ago
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    whew got it

  27. anonymous
    • one year ago
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    right, and \[\frac{33}{-11}=?\]

  28. jessiegonzales
    • one year ago
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    -1/3

  29. anonymous
    • one year ago
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    hmmm no

  30. jessiegonzales
    • one year ago
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    sorry -3

  31. anonymous
    • one year ago
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    right

  32. jessiegonzales
    • one year ago
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    a is the answer

  33. anonymous
    • one year ago
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    oh no

  34. anonymous
    • one year ago
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    \[y-y_1=m(x-x_1)\] you have \(m=-3\)

  35. anonymous
    • one year ago
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    they are using the first point \((-2,15)\) for \((x_1,y_1)\)

  36. jessiegonzales
    • one year ago
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    c is the answer thankyou so much

  37. anonymous
    • one year ago
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    yw

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