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Linear vs Proportional Relationship

  1. Oct 2, 2005 #1
    I know that a linear relationship can be represented by the equation y=mx+b, but is this also a proportional relationship? Doesn't the slope (m) make it proportional? I'm confusing myself over this easy concept. :confused:
  2. jcsd
  3. Oct 2, 2005 #2


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    If y = mx + b then you can say that y varies linearly with x. To say that y is proportional to x means y = kx which is a little more restrictive.
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