document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=772682>Question 772682</A>: <I><SPAN STYLE=\"word-break: break-all;\"> LINE PERPENDICULAR TO -4X+Y=-25 AND CONTAINS (4,-10) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #471089 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=471089\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Sort -4x + y = -25<BR>\n" );
document.write( "into y = mx + c form.<BR>\n" );
document.write( "y = 4x - 25<BR>\n" );
document.write( "Lines that are perpendicular to<BR>\n" );
document.write( "one another have slopes (m)<BR>\n" );
document.write( "that multiply together to give -1<BR>\n" );
document.write( "m1 * m2 = -1<BR>\n" );
document.write( "This line has an 'm' (slope) = 4<BR>\n" );
document.write( "4 * m2 = -1<BR>\n" );
document.write( "m2 = -1/4<BR>\n" );
document.write( "Using coordinates (4, -10)<BR>\n" );
document.write( "in equation y - b = m(x - a)<BR>\n" );
document.write( "a = 4, b = -10 and m = -1/4<BR>\n" );
document.write( "y - (-10) = -1/4(x - 4)<BR>\n" );
document.write( "y + 10 = -1/4x + 4/4<BR>\n" );
document.write( "y = -1/4x + 1 - 10<BR>\n" );
document.write( "y = -1/4x - 9<BR>\n" );
document.write( "OR <BR>\n" );
document.write( "multiply thro' by 4<BR>\n" );
document.write( "4y = -x - 36<BR>\n" );
document.write( "Hope this helps.<BR>\n" );
document.write( ":-) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );