document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=209298>Question 209298</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If the line passing through the points (a,1) and (4,7) is parrallel to the line passing through the points (3,10) and (a+4,3) what is the value of a? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #158222 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=158222\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If the line passing through the points (a,1) and (4,7) is parallel to the line passing through the points (3,10) and (a+4,3) what is the value of a?<BR>\n" );
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document.write( "(7-1)/(4-a) = (10-30)/(3-(a+4))<BR>\n" );
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document.write( "6/(4-a) = -20/(-a-1)<BR>\n" );
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document.write( "6/(4-a) = 20/(a+1)\r<BR>\n" );
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document.write( "Cross multiply and solve for \"a\":<BR>\n" );
document.write( "6a+5 = 80-20a<BR>\n" );
document.write( "26a = 75<BR>\n" );
document.write( "a = 2.8846...<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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