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the lines satisfying the equations x+2y=3 and 3y+ax=2 are perpendicular to each other. find the value of 'a'. please answer and explain how you got, please!!

  • mathURGENT!!!!!! -

    slope of first line = -1/2
    slope of 2nd line = -a/3

    to be perpendicular, they must be negative reciprocals of each other, or, when multiplied we should get -1

    (-1/2)(-a/3) = -1
    a/6 = -1
    a = -6

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