document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=702055>Question 702055</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi I got a math exam review packet and don't understand this question! Please help<BR>\n" );
document.write( "1. find the range of f(x)=-x+22 for the domain {-8,-6,4,7} </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #432753 by </B><A HREF=/tutors/aboutme.mpl?userid=RedemptiveMath><B>RedemptiveMath(80)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=RedemptiveMath><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=432753\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The domain of functions are the x-values and the range of functions are the y-values. In this case, the domain are the values for x and the range are the values for f(x). (In basic algebra, y and f(x) are allowed to mean the same.) All we need to do is find the value for f(x) given the value for x.\r<BR>\n" );
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document.write( "f(x)=-x+22<BR>\n" );
document.write( "f(-8)=-(-8)+22=8+22=30<BR>\n" );
document.write( "f(-6)=-(-6)+22=6+22=28<BR>\n" );
document.write( "f(4)=-(4)+22=-4+22=18<BR>\n" );
document.write( "f(7)=-(7)+22=-7+22=15.\r<BR>\n" );
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document.write( "Again, we can write f(x) as y and the problem may look a little less complex. Of course whatever your teacher expects trumps what I say, so be mindful and disregard anything I have said that contradicts your teacher's beliefs. Now we must write the range values in a similar manner to the domain values we are given:\r<BR>\n" );
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document.write( "Since the domain is {-8,-6,4,7}, the range is {15, 18, 28, 30}.\r<BR>\n" );
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document.write( "It is popular to write the domain and range values from least to greatest (negative to positive from left to right). You could also look at this problem as an input/output table. If x is -8, then the value we get is 30. If x is -6, then y or f(-6) is 28, and so on. \r<BR>\n" );
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