the graph is as follows:

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the Frequency is X-axis and Gain(in DB) on Y-axis.now,the graph is constant fro a certain time that is to say a line parallel to X-axis and gain is constant,after a point there is a constant reduction of gain,and thus the slope becomes negetive.

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**PROBLEM**

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the slope of this graph as i analysed was nothing but time.now how is that possible?time remains 0 for a while and then becomes negetive when slope is negetive.that is to say T(final) is less than T(initial).this is ridiculous.am i wrong somewhere?or this graph is,but this graph is taken from a good book,viz Boylestad and Nashelsky.help me out please.

bye!