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9 October, 19:16

The slope of a line is 1/3. What is the slope of a line perpendicular to this line?

a.) - 3

b.) - 1/3

c.) 1/3

d.) 3

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Answers (1)
  1. 9 October, 23:13
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    A perpendicular line has a negative reciprocal of a given line.

    The given slope is 1/3, the reciprocal of this would be 3/1, which simplifies to 3.

    The negative of 3 is - 3.

    The answer is a) - 3.
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