SOLUTION: what is the deffinition of a non-linear function?

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Question 157286: what is the deffinition of a non-linear function?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Not to be a wise guy, but non-linear functions are those which are not linear.
In other words, when you graph it, it's not a straight line.
Also, it cannot be represented with the formula,
y=mx%2Bb
Also, linear functions give a constant DELTA%2Ay for a constant DELTA%2Ax because the slope is constant.
That is not the case for nonlinear functions.