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anonymous

  • one year ago

Choose the equation of the line passing through the point (-2, 4) and perpendicular to y = -negative one halfx + 4. y = 2x + 8 y = 2x y = -2x - 8 y = -2x

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  1. anonymous
    • one year ago
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    @jim_thompson5910

  2. triciaal
    • one year ago
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    when lines are perpendicular the product of the slopes is -1 slope of line 1 = m slope of perpendicular = -1/m

  3. anonymous
    • one year ago
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    okay

  4. triciaal
    • one year ago
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    find the slope and you have 2 points any point (x,y) and given (-2, 4) the slope is the same for any 2 points on a particular line

  5. anonymous
    • one year ago
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    Alright I get it so far

  6. triciaal
    • one year ago
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    |dw:1438573400221:dw|

  7. anonymous
    • one year ago
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    okay

  8. triciaal
    • one year ago
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    what is the slope of the given line?

  9. anonymous
    • one year ago
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    -1/2?

  10. triciaal
    • one year ago
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    yes so what is the slope of the perpendicular?

  11. anonymous
    • one year ago
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    4

  12. triciaal
    • one year ago
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    no read again how do you find the slope of the perpendicular

  13. anonymous
    • one year ago
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    okay would it be 1/2?

  14. triciaal
    • one year ago
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    |dw:1438573747951:dw|

  15. anonymous
    • one year ago
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    oh okay

  16. anonymous
    • one year ago
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    I'm not sure how to solve that

  17. triciaal
    • one year ago
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    |dw:1438573891894:dw|

  18. triciaal
    • one year ago
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    go back to basics to divide by a fraction invert and multiply

  19. anonymous
    • one year ago
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    I got 1 = 2.2

  20. anonymous
    • one year ago
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    -1 sorry

  21. triciaal
    • one year ago
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    take your time

  22. anonymous
    • one year ago
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    -1 = -3 ?

  23. triciaal
    • one year ago
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    no what is 2 multiplied by 1 and what is the sign when a negative is divided by a negative

  24. anonymous
    • one year ago
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    2 positive

  25. triciaal
    • one year ago
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    thank you! so the slope of the perpendicular is 2 and it passes through the point (-2, 4) m = 2 x = -2 and y = 4 now write your equation

  26. triciaal
    • one year ago
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    solve for b rewrite for any (x, y)

  27. anonymous
    • one year ago
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    can you give me the equation for the slope again?

  28. triciaal
    • one year ago
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    |dw:1438574716508:dw|

  29. anonymous
    • one year ago
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    what would I have to plug in?

  30. triciaal
    • one year ago
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    will you please take the time to read the responses

  31. anonymous
    • one year ago
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    I have read the responses but I dont see another equation that I can plug in for y1,x1, x2 and y2

  32. triciaal
    • one year ago
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    |dw:1438574974543:dw|

  33. anonymous
    • one year ago
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    B would be 8

  34. triciaal
    • one year ago
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    so y = 2 x + 8 agree?

  35. anonymous
    • one year ago
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    Yes

  36. triciaal
    • one year ago
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    review read the question and mark your answer

  37. triciaal
    • one year ago
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    any questions about the steps used?

  38. anonymous
    • one year ago
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    Nope. No questions. Thank you.

  39. triciaal
    • one year ago
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    ok you are welcome please review so you can do on your own quickly

  40. anonymous
    • one year ago
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    srry my computer is slow. It might take a while to get it through

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