document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=102419>Question 102419</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If f(x)=4x-3 find the following:\r<BR>\n" );
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document.write( "f(-1) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #74407 by </B><A HREF=/tutors/aboutme.mpl?userid=bucky><B>bucky(2189)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=bucky><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=74407\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> All that f(-1) is telling you to do is to evaluate the given function of x [that is, f(x)] <BR>\n" );
document.write( "when x is equal to -1.<BR>\n" );
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document.write( "All you do is take the given function and substitute -1 for every x. Once you do that, you<BR>\n" );
document.write( "just reduce the answer.<BR>\n" );
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document.write( "So start with <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29=+4x+-+3 ALIGN=MIDDLE  ALT=\"f%28x%29=+4x+-+3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Then substitute -1 for every x to get:<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28-1%29+=+4%2A%28-1%29+-+3 ALIGN=MIDDLE  ALT=\"f%28-1%29+=+4%2A%28-1%29+-+3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Multiply out the 4 times -1 and the equation becomes:<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28-1%29+=+-4+-+3 ALIGN=MIDDLE  ALT=\"f%28-1%29+=+-4+-+3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Then combine the -4 and -3 and you have the answer of:<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28-1%29+=+-7 ALIGN=MIDDLE  ALT=\"f%28-1%29+=+-7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Hope this helps you to understand how to do problems such as these.<BR>\n" );
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