document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1103127>Question 1103127</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Given that Point A (3,4) lies on the graph of g(x), and Point A' (3,8) lies on the graph of h(x), where h(x)=(f o g) (x), the corresponding point that lies on the graph of f(x) must be ____\r<BR>\n" );
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document.write( "The teacher answer is (4,8) BUT WHY??? </SPAN>\n" );
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document.write( "the point (3,4) means that g(x) = 4 when x = 3.\r<BR>\n" );
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document.write( "the point (3,8) means that h(x) = 8 when x = 3.\r<BR>\n" );
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document.write( "you are given that h(x) = fog(x).\r<BR>\n" );
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document.write( "by definition fog(x) = f(g(x)).\r<BR>\n" );
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document.write( "when x = 3, g(x) = 4, which means that f(g(x)) = f(4) = 8.\r<BR>\n" );
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document.write( "f(4) = 8 results in the point (4,8).\r<BR>\n" );
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document.write( " </SPAN>\n" );
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