Roy Lewallen wrote:
Richard Harrison wrote:
In algebra, y = mx + b, (the point slope formula), is called linear
because it is the graph of a straight line.

But of course you realize that the function y = mx + b doesn't meet the
requirements of a linear function when applied to network theory.

I knew what Richard meant. Quoting "Linear Network Theory",
by Ferris: "In the functional relationship, h(t)=kf(t), no
matter what h(t) and f(t) represent, the relation h(t)=kf(t)
must be linear. ... An elementary concept, then, is that h(t)
and f(t) are related by a straight line of the form
h(t) = mt + b."
--
73, Cecil http://www.qsl.net/w5dxp