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NathalyN

  • one year ago

Help ????

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  1. NathalyN
    • one year ago
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    @calculusxy

  2. Michele_Laino
    • one year ago
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    question #23 hint: we have to find the slope of line D first

  3. NathalyN
    • one year ago
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    ok

  4. calculusxy
    • one year ago
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    Find the slope of Line D and to find the slope of the perpendicular line, take the negative reciprocal.

  5. calculusxy
    • one year ago
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    ... of the slope

  6. NathalyN
    • one year ago
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    okZZ>?

  7. Michele_Laino
    • one year ago
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    the slope m, of line D, is: \[\Large m = \frac{{6 - 1}}{{5 - 1}} = ...?\]

  8. NathalyN
    • one year ago
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    5/4

  9. calculusxy
    • one year ago
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    Find the reciprocal of 5/4

  10. Michele_Laino
    • one year ago
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    correct! now the requested slope m1, is given by thie condition: \[\Large {m_1} \cdot \frac{5}{4} = - 1\]

  11. calculusxy
    • one year ago
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    ...then stick a negative sign.

  12. Michele_Laino
    • one year ago
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    the*

  13. NathalyN
    • one year ago
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    okay so for the number 3 ths answer is um B OR A right????

  14. calculusxy
    • one year ago
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    ya

  15. Michele_Laino
    • one year ago
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    only one is the correct option

  16. calculusxy
    • one year ago
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    But what is the reciprocal of 5/4?

  17. NathalyN
    • one year ago
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    is the answer A??? @Michele_Laino

  18. Michele_Laino
    • one year ago
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    no, I'm sorry, option A is a wrong option

  19. NathalyN
    • one year ago
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    THEN b

  20. calculusxy
    • one year ago
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    yes but do you know why?

  21. NathalyN
    • one year ago
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    well of all the answers that you have gave me i new that it needed to be a or b !?:?

  22. Michele_Laino
    • one year ago
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    If I multiply both sides of my equation by 4 , I get: \[\Large {m_1} \cdot 5 = - 4\] please divide both sides by 5, what do you get?

  23. calculusxy
    • one year ago
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    Remember that finding the perpendicular line of a line that we already know, we need to find the slope first (of the original line). Then, we have to find the reciprocal (a/b -> b/a) and finally put a negative sign next to it (that's why it's called negative reciprocal).

  24. NathalyN
    • one year ago
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    oh okay i did not know that @calculusxy

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