document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=511385>Question 511385</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How should i start. The below problem seem easy but i not able to solve it.\r<BR>\n" );
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document.write( "ABCD is parallelogram. A(1,2),B(7,-1), C(-1,-2) and D(x,y). Find equation AD and also CD.\r<BR>\n" );
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document.write( "C.M </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #342187 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=342187\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A(1,2),B(7,-1), C(-1,-2) and D(x,y)\r<BR>\n" );
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document.write( "In any parallelogram ABCD AB || to CD so CD has the same slope as AB and passes through C (-1-2)\r<BR>\n" );
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document.write( "x1		y1	x2	y2				<BR>\n" );
document.write( "1		2	7	-1				<BR>\n" );
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document.write( "slope m =		(y2-y1)/(x2-x1)						<BR>\n" );
document.write( "(	-1	-	2	)/(	7	-	1	) <BR>\n" );
document.write( "(	-3	/	6	)  				<BR>\n" );
document.write( "m=		-  1/ 2						 <BR>\n" );
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document.write( "Plug value of  the slope  and point (-1	,-2) in	<BR>\n" );
document.write( "Y 	=	m	x 	+	b			<BR>\n" );
document.write( "-2.00	=	 1/2	+	b				<BR>\n" );
document.write( "b=	-2	-	 1/2					<BR>\n" );
document.write( "b=	-5/ 2							<BR>\n" );
document.write( "So the equation  will be								<BR>\n" );
document.write( "Y 	=	- 1/2	x -5/2		is the equation of CD\r<BR>\n" );
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document.write( "....	<BR>\n" );
document.write( "In any parallelogram ABCD BC || to AD so AD has the same slope as BC and passes through A (1,2)\r<BR>\n" );
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document.write( "x1		y1	x2	y2				<BR>\n" );
document.write( "7		-1	-1	2				<BR>\n" );
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document.write( "slope m =		(y2-y1)/(x2-x1)						<BR>\n" );
document.write( "(	2	-	-1	)/(	-1	-	7	) <BR>\n" );
document.write( "(	3	/	-8	)  				<BR>\n" );
document.write( "m=		-  3/ 8						 <BR>\n" );
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document.write( "Plug value of  the slope  and point 			(	1	,	2	) in	<BR>\n" );
document.write( "Y 	=	m	x 	+	b			<BR>\n" );
document.write( "2.00	=	- 3/8	+	b				<BR>\n" );
document.write( "b=	2	-	- 3/8					<BR>\n" );
document.write( "b=	19/ 8							<BR>\n" );
document.write( "So the equation  will be								<BR>\n" );
document.write( "Y 	=	- 3/8	x 	+	19/8	\r<BR>\n" );
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document.write( "m.ananth@hotmail.ca		\r<BR>\n" );
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