document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1080335>Question 1080335</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I was hoping someone could check my work on this function, and help explain why it is, or isn't a viable answer. Thank you.\r<BR>\n" );
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document.write( "f(x)= \r<BR>\n" );
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document.write( "-6+x <BR>\n" );
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document.write( "7+3x \r<BR>\n" );
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document.write( "Find f(y+2). \r<BR>\n" );
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document.write( "f(y+2)=??? \r<BR>\n" );
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document.write( "I thought the answer might be something like... \r<BR>\n" );
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document.write( "f(y+2)= \r<BR>\n" );
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document.write( "y-4 <BR>\n" );
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document.write( "3y+13  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #694501 by </B><A HREF=/tutors/aboutme.mpl?userid=Edwin+McCravy><B>Edwin McCravy(20081)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Edwin+McCravy><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=Edwin+McCravy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=694501\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
document.write( "If you have an equation for f(x), like\r\n" );
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document.write( "f(x) = 4x + 3\r\n" );
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document.write( "Then if you are asked for f(a), that means to substitute\r\n" );
document.write( "a for x.\r\n" );
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document.write( "f(a) = 4a + 3\r\n" );
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document.write( "If there is a number in the parentheses like 2, that is,\r\n" );
document.write( "if you are asked for f(2), you substitute 2 for x, and simplify:\r\n" );
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document.write( "f(x) = 4x + 3\r\n" );
document.write( "f(2) = 4(2) + 3\r\n" );
document.write( "f(2) = 8 + 3\r\n" );
document.write( "f(2) = 11\r\n" );
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document.write( "If there is an expression like y+2 in the parentheses, that\r\n" );
document.write( "is if you are asked for f(y+2) you substitute y+2 for x, then\r\n" );
document.write( "simplify:\r\n" );
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document.write( "f(x) = 4x + 3\r\n" );
document.write( "f(y+2) = 4(y+2) + 3\r\n" );
document.write( "f(y+2) = 4y+8 + 3\r\n" );
document.write( "f(y+2) = 4y+11\r\n" );
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document.write( "The left side stays f(y+2). It does not mean \"fy+2f\".  It looks like\r\n" );
document.write( "multiplication but it is not. \r\n" );
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document.write( "You always substitute what is in the parentheses for x and simplify,\r\n" );
document.write( "if possible.\r\n" );
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document.write( "Sorry we can't figure out what you are asking.  If you'll copy it\r\n" );
document.write( "word-for-word exactly like it's stated in your book or computer\r\n" );
document.write( "page, we can help you.  If you type it just as it is given in the \r\n" );
document.write( "book in the thank-you note form below, we'll get back to you by email.\r\n" );
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document.write( "Edwin</PRE> </SPAN>\n" );
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