document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1115219>Question 1115219</A>: <I><SPAN STYLE=\"word-break: break-all;\"> T(-10,-2) R(10,8) Y(11,-9) are vertices of &#8710;TRY <BR>\n" );
document.write( "1) find equation of YA, the altitude from Y to TR . show that A(4,5)<BR>\n" );
document.write( "2) if equation of perpendicular bisector is y=3x-7, find equation of circle through T, R, Y .<BR>\n" );
document.write( "3) find the area of &#8710;TRY<BR>\n" );
document.write( "4) find size of angle T  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #843949 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=843949\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Equation of TR \r<BR>\n" );
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document.write( "x1		y1	x2	y2			<BR>\n" );
document.write( "-10		-2	10	8			<BR>\n" );
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document.write( "slope m =		(y2-y1)/(x2-x1)					<BR>\n" );
document.write( "(	8	-	-2	)/(	10	-	-10<BR>\n" );
document.write( "(	10	/	20	)  			<BR>\n" );
document.write( "m=		0.50					<BR>\n" );
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document.write( "Plug value of  the slope  and point			(	-10	,	-2	) in<BR>\n" );
document.write( "Y	=	m	x	+	b		<BR>\n" );
document.write( "-2.00	=	-5    	+	b			<BR>\n" );
document.write( "b=	-2.00	-	-5    				<BR>\n" );
document.write( "b=	3      						<BR>\n" );
document.write( "So the equation  of TR will be							<BR>\n" );
document.write( "Y 	=	  1/2 	x	+	3    	( m=1/2)..................................(1)\r<BR>\n" );
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document.write( "AY is perpendicular to TR y=(11,-9)	<BR>\n" );
document.write( "slope of AY = -2  ( negative reciprocal)\r<BR>\n" );
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document.write( "Equation AY \r<BR>\n" );
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document.write( "slope =2 , Y=(11,-9)\r<BR>\n" );
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document.write( "(y-(-9))= (-2)(x-11)\r<BR>\n" );
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document.write( "y+9= -2x+22\r<BR>\n" );
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document.write( "y= -2x+13.................................................(2)\r<BR>\n" );
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document.write( "Solve (1)&(2) to get point A (4,5)\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );