document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1091804>Question 1091804</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Write an equation of the line containing the given point and perpendicular to the given line. Express your answer in the form y=mx+b<BR>\n" );
document.write( "(4,7);5x+y=9 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #706264 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=706264\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 5x + y = 9<BR>\n" );
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document.write( "y = -5x +9<BR>\n" );
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document.write( "the slope of this line is -5, therefore the perpendicular line is the negative reciprocal of -5 which is 1/5<BR>\n" );
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document.write( "y = x/5 +b<BR>\n" );
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document.write( "to find b, we use the point (4,7)<BR>\n" );
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document.write( "7 = 4/5 +b<BR>\n" );
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document.write( "b = 7 -4/5 = 35/5 -4/5 = 31/5<BR>\n" );
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document.write( "y = x/5 +31/5<BR>\n" );
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document.write( "  </SPAN>\n" );
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