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15 March, 05:41

Which lines are perpendicular to the line y - 1 = 1/3 (x+2) ? Check all that apply.

A. y + 2 = - 3 (x-4)

B. y - 5 = 3 (x+11)

C. y = - 3x - 5/3

D. y = 1/3x - 2

E. 3x + y = 7

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Answers (2)
  1. 15 March, 07:31
    0
    a c e
  2. 15 March, 08:37
    0
    The slope of the given line is 1/3.

    The perpendiculars all have the negative reciprocal slope, - 3.

    A. y + 2 = - 3 (x-4)

    Yes, slope - 3.

    B. y - 5 = 3 (x+11)

    No, slope 3.

    C. y = - 3x - 5/3

    Yes, slope - 3.

    D. y = 1/3 x - 2

    No, that's slope 1/3.

    E. 3x + y = 7

    That's

    y = - 3x + 7

    Another slope - 3, Yes.
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