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2 January, 22:19

10. Determine whether y = 4x + 5 and y = 1/4x-2 are perpendicular.

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  1. 2 January, 23:20
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    They are perpendicular because 1/4 is the opposite reciprocal of 4.

    4/1 flipped over is 1/4 which is the slope of both. That means that if the number is the opposite reciprocal, and it's on the slope, then the 2 lines are perpendicular.
  2. 3 January, 02:12
    0
    They are perpendicular 1/4 is the reciprocal to 4
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