document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1073268>Question 1073268</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If f(x) =-10x - 6, what is f -1(x)? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #688104 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=688104\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> you are looking for the inverse function.\r<BR>\n" );
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document.write( "let y = f(x).\r<BR>\n" );
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document.write( "your equation becomes y = -10x - 6\r<BR>\n" );
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document.write( "replace y with x and x with y and then solve for y.\r<BR>\n" );
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document.write( "replacing y with x and x with y gets you x = -10y - 6\r<BR>\n" );
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document.write( "solve this equation for y as follows:\r<BR>\n" );
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document.write( "start with x = -10y - 6\r<BR>\n" );
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document.write( "add 6 to both sides to get x + 6 = -10y\r<BR>\n" );
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document.write( "divide both sides by -10 to get y = (x + 6) / -10\r<BR>\n" );
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document.write( "if this is the inverse equation, then the point (x,y) in the original equation will be equal to the point (y,x) in the inverse equation.\r<BR>\n" );
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document.write( "to confirm that, let x be any value and then solve for y in the original equation.\r<BR>\n" );
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document.write( "for example, let x = 1 in the original equation.\r<BR>\n" );
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document.write( "y = -10x - 6 becomes y = -10 * 1 - 6 which becomes y = -10 - 6 which becomes y = -16.\r<BR>\n" );
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document.write( "your coordinate point from the first equation is (1,-16).\r<BR>\n" );
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document.write( "the corresponding coordinate point in the inverse equation will be (-16,1).\r<BR>\n" );
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document.write( "your inverse equation is y = (x+6)/-10.\r<BR>\n" );
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document.write( "replace x with -16 and you get y = (-16 + 6)/ -10.\r<BR>\n" );
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document.write( "simplify to get y = -10 / -10.\r<BR>\n" );
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document.write( "solve for y to get y = 1.\r<BR>\n" );
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document.write( "your corresponding point in the inverse equation is (-16,1).\r<BR>\n" );
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document.write( "(x,y) in the original equation becomes (y,x) in the inverse equation.\r<BR>\n" );
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document.write( "(1,-16) in the original equation becomes (-16,1) in the inverse equation.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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