document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=87785>Question 87785</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The key is to find the slope of the line between the two given points, then use that value to determine the slope of a perpendicular line.\r<BR>\n" );
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document.write( "16) Find the slope of any line perpendicular to the line through points (0, 5) <BR>\n" );
document.write( "and (-3, -4).<BR>\n" );
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document.write( "        slope of the line through the points (0,5)&(-3,-4)=M= y2-y1/x2-x1<BR>\n" );
document.write( "                                                            =--4-5/-3-0 <BR>\n" );
document.write( "                                                            =-9/-3<BR>\n" );
document.write( "                                                            =3   <BR>\n" );
document.write( "             slope of the line  perpendicular to the given line m1.m2=-1<BR>\n" );
document.write( "                       slpoe of the required line = m2=-1/3             </SPAN>\n" );
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