Question 1192180
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It may have different names, depending on the context, which we do not know from your post.


For example, in one context, it is a slope of a straight line in a coordinate plane.


In other context, it is the first difference of a function y = y(x).


In the third context, it can be a formula to estimate the first derivative of the function y = y(x).


In the fourth context, it can be the average rate of changing function y = y(x).



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