document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=241609>Question 241609</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have two question.\r<BR>\n" );
document.write( "\n" );
document.write( "write the equation of the line. Through (8,-9), perpendicular to 7x + 9y = -25<BR>\n" );
document.write( "question #2 is through (-6,-7) parallel to -2x + 7y=26<BR>\n" );
document.write( "Can you please Help????? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #176975 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=176975\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The rule is: if you have a line with slope = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m ALIGN=MIDDLE  ALT=\"m\"   DISABLED_style= \"max-width:90%; height:auto;\" >, then<BR>\n" );
document.write( "ANY line perpendicular to it will have slope = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-%281%2Fm%29 ALIGN=MIDDLE  ALT=\"-%281%2Fm%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "So, first you have to find the slope of your line.<BR>\n" );
document.write( "Get it into the form <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+mx+%2B+b ALIGN=MIDDLE  ALT=\"y+=+mx+%2B+b\"   DISABLED_style= \"max-width:90%; height:auto;\" > where <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m ALIGN=MIDDLE  ALT=\"m\"   DISABLED_style= \"max-width:90%; height:auto;\" > = slope<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7x+%2B+9y+=+-25 ALIGN=MIDDLE  ALT=\"7x+%2B+9y+=+-25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9y+=+-7x+-+25 ALIGN=MIDDLE  ALT=\"9y+=+-7x+-+25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+-%287%2F9%29%2Ax+-+25%2F9 ALIGN=MIDDLE  ALT=\"y+=+-%287%2F9%29%2Ax+-+25%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "You can see that <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m+=+-%287%2F9%29 ALIGN=MIDDLE  ALT=\"m+=+-%287%2F9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now you have to find <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-%281%2Fm%29 ALIGN=MIDDLE  ALT=\"-%281%2Fm%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Divide both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m ALIGN=MIDDLE  ALT=\"m\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1+=+-%287%2F9%29%2A%281%2Fm%29 ALIGN=MIDDLE  ALT=\"1+=+-%287%2F9%29%2A%281%2Fm%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Divide both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7%2F9 ALIGN=MIDDLE  ALT=\"7%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F%287%2F9%29+=+-%281%2Fm%29 ALIGN=MIDDLE  ALT=\"1%2F%287%2F9%29+=+-%281%2Fm%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9%2F7+=+-%281%2Fm%29 ALIGN=MIDDLE  ALT=\"9%2F7+=+-%281%2Fm%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "So, ANY line perpendicular to the given line will have this slope<BR>\n" );
document.write( "The line you're looking for passes through (8,-9)<BR>\n" );
document.write( "The formula is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28y+-+y%5B1%5D%29%2F%28x+-x%5B1%5D%29+=+m ALIGN=MIDDLE  ALT=\"%28y+-+y%5B1%5D%29%2F%28x+-x%5B1%5D%29+=+m\"   DISABLED_style= \"max-width:90%; height:auto;\" > where( <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5B1%5D ALIGN=MIDDLE  ALT=\"x%5B1%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y%5B1%5D ALIGN=MIDDLE  ALT=\"y%5B1%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >) is the given point<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28y+-+%28-9%29%29%2F%28x+-+8%29+=+9%2F7 ALIGN=MIDDLE  ALT=\"%28y+-+%28-9%29%29%2F%28x+-+8%29+=+9%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x-8 ALIGN=MIDDLE  ALT=\"x-8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+%2B+9+=+%289%2F7%29%2A%28x-8%29 ALIGN=MIDDLE  ALT=\"y+%2B+9+=+%289%2F7%29%2A%28x-8%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+%2B+9+=+%289%2F7%29%2Ax+-+72%2F7 ALIGN=MIDDLE  ALT=\"y+%2B+9+=+%289%2F7%29%2Ax+-+72%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+%289%2F7%29%2Ax+-+63%2F7+-+72%2F7 ALIGN=MIDDLE  ALT=\"y+=+%289%2F7%29%2Ax+-+63%2F7+-+72%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+%289%2F7%29%2Ax+-+135%2F7 ALIGN=MIDDLE  ALT=\"y+=+%289%2F7%29%2Ax+-+135%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" > answer<BR>\n" );
document.write( "Or, if you like,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9x+-+7y+-+135+=+0 ALIGN=MIDDLE  ALT=\"9x+-+7y+-+135+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "I'll plot both lines<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+600%2C+600%2C+-20%2C+25%2C+-20%2C+25%2C+-%287%2F9%29%2Ax+-+25%2F9%2C+%289%2F7%29%2Ax+-+135%2F7%29+ ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );