document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=401576>Question 401576</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Given A(-5,8), B(12,10) are points on line 1, and C(-7,-2), D(10,0) are points on line 2.<BR>\n" );
document.write( "1a) Determine if line 1 and line 2 are parallel lines.\r<BR>\n" );
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document.write( "yes or no<BR>\n" );
document.write( "Reason:\r<BR>\n" );
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document.write( "1b) Find the slope m of a line perpendicular to line 2\r<BR>\n" );
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document.write( "m= </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #284241 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=284241\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%5BAB%5D+=+%2810-8%29%2F%2812--5%29+=+2%2F17 ALIGN=MIDDLE  ALT=\"m%5BAB%5D+=+%2810-8%29%2F%2812--5%29+=+2%2F17\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%5BCD%5D+=+%280--2%29%2F%2810--7%29+=+2%2F17 ALIGN=MIDDLE  ALT=\"m%5BCD%5D+=+%280--2%29%2F%2810--7%29+=+2%2F17\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( "Therefore line AB is parallel to line CD.\r<BR>\n" );
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document.write( "The slope m of a line perpendicular to line CD is -17/2.\r<BR>\n" );
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