document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=238229>Question 238229</A>: <I><SPAN STYLE=\"word-break: break-all;\"> write the equation of the line perpindicular to \r<BR>\n" );
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document.write( "y=1/2x-5 through point (3,-7)\r<BR>\n" );
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document.write( "[1/2 is one half] </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #175079 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=175079\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> y=1/2x-5 (red line)<BR>\n" );
document.write( "through point (3,-7)<BR>\n" );
document.write( "This line has a slope=1/2.<BR>\n" );
document.write( "A perpendicular line's slope=-2.<BR>\n" );
document.write( "-7=-2*3+b<BR>\n" );
document.write( "-7=-6+b<BR>\n" );
document.write( "b=-7+6<BR>\n" );
document.write( "b=-1 The y intercept.<BR>\n" );
document.write( "y=-2x-1 (green line)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+300%2C+-6%2C+5%2C+-6%2C+5%2C+x%2F2+-5%2C+-2x+-1%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+300%2C+-6%2C+5%2C+-6%2C+5%2C+x%2F2+-5%2C+-2x+-1%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > (graph 300x300 pixels, x from -6 to 5, y from -6 to 5, of TWO functions x/2 -5 and -2x -1).<BR>\n" );
document.write( "x/2-5=-2x-1<BR>\n" );
document.write( "x/2+2x=-1+5<BR>\n" );
document.write( "(x+2*2x)/2= 4<BR>\n" );
document.write( "x+4x=8<BR>\n" );
document.write( "5x=8<BR>\n" );
document.write( "x=8/5=1.6 ans. for the x value.<BR>\n" );
document.write( "y=1.6/2-5<BR>\n" );
document.write( "y=.8-5<BR>\n" );
document.write( "y=-4.2 ans. for the y value.<BR>\n" );
document.write( "Answer (1.6,-4.2)<BR>\n" );
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