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Math Help - Writing an equation of a Perpendicular Line

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    Writing an equation of a Perpendicular Line

    Could someone please help me out with this problem?

    The line L1 has the equation y=3x. The line L2 is perpendicular to L1 and passes through the point P(0,0). Write an equation of L2
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    Quote Originally Posted by GLAMX View Post
    Could someone please help me out with this problem?

    The line L1 has the equation y=3x. The line L2 is perpendicular to L1 and passes through the point P(0,0). Write an equation of L2
    Perpendicular lines have slopes that are negative reciprocals of each other, except in the case of a horizontal and vertical line.

    You can use point-slope or just recognize that any line through the origin has the form y=mx.
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