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Math Help - equation of line

  1. #1
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    equation of line

    In the book "Calculus For Dummies" page 57 it says convert y - 11 = 3 ( x - 2 ) into y = 3x + 5 There is no clue in sight on how to go about doing that.
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  2. #2
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    Quote Originally Posted by radioflyer01 View Post
    In the book "Calculus For Dummies" page 57 it says convert y - 11 = 3 ( x - 2 ) into y = 3x + 5 There is no clue in sight on how to go about doing that.
    hmmm.

    You know that: y-11=3(x-2)

    So use the distributive property: y-11=3x-6

    Now add 11 to both sides: y\!\!\!\!\!\overbrace{-11+11}^{\text{notice this equals 0}}\!\!\!\!\!=3x\!\!\!\!\!\underbrace{-6+11}_{\text{and this equals 5}}

    Therefore: y=3x+5
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  3. #3
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    Thank you very much.
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