document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=269921>Question 269921</A>: <I><SPAN STYLE=\"word-break: break-all;\"> -8x+5y=3<BR>\n" );
document.write( "Find the equation of line through 18,15 parallel to -8x+5y=3 and perpindicular.\r<BR>\n" );
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document.write( "I get the slope is 8/5 parallel and -5/8 perp, please help with the rest of the formula.There answer is (-5/8)x+(105/4) and -(-8/5)x+(-69/5). How are they getting the two answers? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #197854 by </B><A HREF=/tutors/aboutme.mpl?userid=dabanfield><B>dabanfield(803)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dabanfield><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=197854\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the equation of line through 18,15 parallel to -8x+5y=3 and perpindicular. <BR>\n" );
document.write( "I get the slope is 8/5 parallel and -5/8 perp, please help with the rest of the formula.There answer is (-5/8)x+(105/4) and -(-8/5)x+(-69/5). How are they getting the two answers?\r<BR>\n" );
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document.write( "You have the two slopes right :)\r<BR>\n" );
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document.write( "The slope-intercept frm of the paralle line is:\r<BR>\n" );
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document.write( "y = (8/5)*x + b\r<BR>\n" );
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document.write( "Since the line passes through (18,15) we know when x = 18, y = 15 so:\r<BR>\n" );
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document.write( "15 = (8/5)*18 + b<BR>\n" );
document.write( "b = 144/5 - 15<BR>\n" );
document.write( "b = 144/5 - 75/18<BR>\n" );
document.write( "b = 69/5 \r<BR>\n" );
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document.write( "So the parallel line is: y =(8/5)*x + 69/5\r<BR>\n" );
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document.write( "The perpendicular line is:\r<BR>\n" );
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document.write( "y = (-5/8)*x + b<BR>\n" );
document.write( "15 = (-5/8)*18 + b<BR>\n" );
document.write( "b = -90/8 - 15<BR>\n" );
document.write( "b = -90/8 - 120/8<BR>\n" );
document.write( "b = -210/8<BR>\n" );
document.write( "b = -105/4\r<BR>\n" );
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document.write( "So the perpendicular line is: y = (-5/8)*x - 105/4 </SPAN>\n" );
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