It can be deduced that a non linear function is a function where the graph isn't a line.
Your information is incomplete as the circle isn't given. Therefore, an overview of the non linear function will be given.
A non linear function simply means a function where the graph is not a line. In this case, they do not have a constant slope.
A non linear function is a function shows graph isn't a line or part of a line. In such a case, the graph isn't a straight line.
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