document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=685197>Question 685197</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Help me please, I just cannot get this!!!\r<BR>\n" );
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document.write( "For the given correspondence, writ the domain and range. Then determine whether it is a function;\r<BR>\n" );
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document.write( "(7,0), (-4,7),(0,-4),(7,-6)\r<BR>\n" );
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document.write( "a domain [-4,0,7] range [-6,-4,0,7] yes a function<BR>\n" );
document.write( "b domain [-4,0,7] range [-6,-4,0,7] no not a function<BR>\n" );
document.write( "c domain [-6,-4,0,7] range [-4,0,7] no not a function<BR>\n" );
document.write( "d domain [-6,-4,0,7] range [-4,0,7] yes a function </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #424376 by </B><A HREF=/tutors/aboutme.mpl?userid=vleith><B>vleith(2983)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=vleith><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=424376\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The domain consists of all the unique values of x. So domain is -4, 0, 7<BR>\n" );
document.write( "The range is all the unique values of y. so range is -6, -4, 0, 7\r<BR>\n" );
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document.write( "A function needs to pass the vertical line test. That means for every value in the domain the is one and only one vaue in the value.<BR>\n" );
document.write( "Since a domain value of 7 is mapped to both 0 and -6, you fail the vertical line test. Thus it is NOT a function.\r<BR>\n" );
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document.write( "Answer : B </SPAN>\n" );
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