document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1021162>Question 1021162</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Ex. 9. Plot the points(0,-10), (8,1), (15,10). How far is the second point from the line joining the other two?\r<BR>\n" );
document.write( "\n" );
document.write( "Solve Ex. 9 for the points (-10,-20), (17,0), (30, 10).\r<BR>\n" );
document.write( "\n" );
document.write( "Please solve.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #636921 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=636921\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The line connecting the points (0,-10) and (15,10) is 4x-3y-30 = 0 (in general form). (You should be able to determine this!)\r<BR>\n" );
document.write( "\n" );
document.write( "From analytic geometry the distance of a point from a line not containing it is\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d+=+abs%28ax%5B0%5D%2Bby%5B0%5D%2Bc%29%2Fsqrt%28a%5E2%2Bb%5E2%29 ALIGN=MIDDLE  ALT=\"d+=+abs%28ax%5B0%5D%2Bby%5B0%5D%2Bc%29%2Fsqrt%28a%5E2%2Bb%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, where (<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5B0%5D ALIGN=MIDDLE  ALT=\"x%5B0%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >,<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y%5B0%5D ALIGN=MIDDLE  ALT=\"y%5B0%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >) is the given point.\r<BR>\n" );
document.write( "\n" );
document.write( "==><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d+=+abs%284%2A8-3%2A1-30%29%2Fsqrt%284%5E2%2B%28-3%29%5E2%29+=+abs%28-1%29%2Fsqrt%2825%29+=+highlight%281%2F5%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );