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22 January, 18:09

Which of the following pairs of lines are perpendicular? Select all that apply

A. y = 2x + 5 and y = - 2x + 5

B. y = - 4x + 5 and y = 1/4x + 5

C. y = 2 and y = - 2

D. y = x + 4 and y = - x + 4

E. y = - 3 and x = - 3

F. y = 2/5x + 5 and y = 5/2x - 2

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Answers (1)
  1. 22 January, 20:59
    -1
    Perpendicular lines will have negative reciprocal slopes

    B. y = - 4x + 5 and y = 1/4x + 4

    D. y = x + 4 and y = - x + 4

    E. y = - 3 and x = - 3
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