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Math Help - Help with slope and y-intercept

  1. #1
    sha
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    Question Help with slope and y-intercept

    I need help determining the slope and y-intercept of the equation of the graph of the equation x+y=3
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by sha View Post
    I need help determining the slope and y-intercept of the equation of the graph of the equation x+y=3
    first we want to get the equation in the form y = mx + b, once it is in this form, we know that the slope is m and the y-intercept is b.

    x + y = 3
    => y = -x + 3 ...............subtracted x from both sides

    now we have it in the correct form. we have a -1 in front of the x, so the slope of this line is -1. we also have a lone constant 3, this is our y-intercept
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