document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1180541>Question 1180541</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am having trouble with this question: <BR>\n" );
document.write( "If f (x) = a + bx, what is f (x + k)  -  f (x) ?<BR>\n" );
document.write( "Thank you so much! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #810248 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=810248\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "If <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29=a+%2Bbx ALIGN=MIDDLE  ALT=\"f%28x%29=a+%2Bbx\"   DISABLED_style= \"max-width:90%; height:auto;\" >, what is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%2Bk%29-f%28x%29 ALIGN=MIDDLE  ALT=\"f%28x%2Bk%29-f%28x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "first find <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%2Bk%29 ALIGN=MIDDLE  ALT=\"f%28x%2Bk%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%2Bk%29=a+%2Bb%28x%2Bk%29 ALIGN=MIDDLE  ALT=\"f%28x%2Bk%29=a+%2Bb%28x%2Bk%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%2Bk%29=a+%2Bbx%2Bbk ALIGN=MIDDLE  ALT=\"f%28x%2Bk%29=a+%2Bbx%2Bbk\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "now substitute in \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%2Bk%29-f%28x%29 ALIGN=MIDDLE  ALT=\"f%28x%2Bk%29-f%28x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a+%2Bbx%2Bbk-%28a+%2Bbx%29 ALIGN=MIDDLE  ALT=\"a+%2Bbx%2Bbk-%28a+%2Bbx%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a+%2Bbx%2Bbk-a+-bx ALIGN=MIDDLE  ALT=\"a+%2Bbx%2Bbk-a+-bx\"   DISABLED_style= \"max-width:90%; height:auto;\" >...simplify\r<BR>\n" );
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document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=bk ALIGN=MIDDLE  ALT=\"bk\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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