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    arinteana's Avatar
    arinteana Posts: 6, Reputation: 1
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    #1

    Jan 12, 2012, 10:23 PM
    perpendicular lines.
    The lines described by y=(5a-7) and y=1/6x are perpendicular. What is the value of a?
    corrigan's Avatar
    corrigan Posts: 115, Reputation: 18
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    #2

    Jan 13, 2012, 05:06 PM
    arinteana: We aren't going to do your homework. Show me what you've tried, and tell me what you're stuck on, and I'll help you. Also, don't just cut and paste your problems. The first equation of this question doesn't have an x, and therefore can't ever be perpendicular to y= 1/6 x.
    rabidcrayons13's Avatar
    rabidcrayons13 Posts: 1, Reputation: 1
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    #3

    Jan 13, 2012, 09:21 PM
    This is actually a question from a summative exam. The x in the first equation is supposed to be after the 2nd parenthesis.
    lato1's Avatar
    lato1 Posts: 6, Reputation: 1
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    #4

    Jan 16, 2012, 02:57 AM
    You have to be able to remember the conditions for perpendicular lines . Hint try finding out how their slopes are related and you are on the right track
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