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anonymous

  • 4 years ago

Show that a line through (0, 0) and (c, d) is perpendicular to a line through (0, 0) and (-d, c). Slope of first line = Slope of second line =

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  1. ash2326
    • 4 years ago
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    johny find the slope of both the lines , let them be m1 and m2 if \[m1*m2=-1\] then the lines are perpendicular

  2. anonymous
    • 4 years ago
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    Two lines are perpendicular if the product of there slopes is -1

  3. anonymous
    • 4 years ago
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    i already knew that

  4. anonymous
    • 4 years ago
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    For the line through (0, 0) and (c, d) the slope is \( \frac {d}{c} \) and for the line through (0,0) and (-d.c) the slope is \(-\frac{c}{d} \) now if you take the product it will be -1 hence the two lines will be perpendicular.

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