document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=975975>Question 975975</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the center-radius form for the circle having the endpoints (7,2) and (-9,8) of a diameter.\r<BR>\n" );
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document.write( "Thank you! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #597633 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=597633\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the center-radius form for the circle having the endpoints (7,2) and (-9,8) of a diameter.<BR>\n" );
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document.write( "The center is the midpoint.<BR>\n" );
document.write( "Find the average of x & y separately for the midpoint.<BR>\n" );
document.write( "x = (7-9)/2 = -1<BR>\n" );
document.write( "y = (2+8)/2 = 5<BR>\n" );
document.write( "--> center at (-1,5)<BR>\n" );
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document.write( "r is the distance from the midpoint to either point.<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%5E2+=+diffy%5E2+%2B+diffx%5E2+=+3%5E2+%2B+8%5E2+=+73 ALIGN=MIDDLE  ALT=\"r%5E2+=+diffy%5E2+%2B+diffx%5E2+=+3%5E2+%2B+8%5E2+=+73\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%2B1%29%5E2+%2B+%28y-5%29%5E2+=+73 ALIGN=MIDDLE  ALT=\"%28x%2B1%29%5E2+%2B+%28y-5%29%5E2+=+73\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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