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Math Help - Writing Equation of perpendicular line.

  1. #1
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    Writing Equation of perpendicular line.

    This question is really throwing me through a loop, here:

    Write an equation of the line containing a given point and perpendicular to the given line. Express your answer in y=mx+b

    (3,6) 7x+y=6
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  2. #2
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    Re: Writing Equation of perpendicular line.

    If you could also show me your work, I'd appreciate it.
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  3. #3
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    Re: Writing Equation of perpendicular line.

    two lines are perpendicular if their slopes are opposite reciprocals.

    determine the slope of the line 7x+y = 6 by changing to y = mx+b form.

    find the opposite reciprocal of the slope of 7x+y = 6, then use that slope and the given point to write the required linear equation.

    if you require further info, go to the link for a lesson ...

    Pearson Prentice Hall Mathematics Video
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