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

    Jan 12, 2012, 10:05 PM
    slope and equation.
    Find the value of a such that the points (3, a) and (5, 2a) lie on a line with slope m=1/3.
    lato1's Avatar
    lato1 Posts: 6, Reputation: 1
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    #2

    Jan 16, 2012, 02:47 AM
    remember the formula for finding slope
    Y2-Y1/X2-X1=m
    so we are giving Y2=2a,Y1=a,X2=5,X1=3 and m=1/3
    2a-a/5-3=1/3
    a/2=1/3
    by cross multiplying we have 3a=2
    a=2/3
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