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    texans1977's Avatar
    texans1977 Posts: 2, Reputation: 1
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    #1

    Jan 31, 2008, 07:11 AM
    Solving systems by Substitution
    {y = x -2
    {y = 4x + 1
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    Jan 31, 2008, 08:59 AM
    So, replace y in you first equation by the definition of y in your second equation ie:

    y = x-2

    but also

    y = 4x+1

    Therefore:

    x-2 = 4x+1

    you can now solve this system for x. Resubstitute your value of x into one of the initial equations to find y.
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