document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1207918>Question 1207918</A>: <I><SPAN STYLE=\"word-break: break-all;\"> For A and B, find the standard form of the equation of each circle.\r<BR>\n" );
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document.write( "A. Center (1,0) and has the point (-3,2).\r<BR>\n" );
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document.write( "B. Center (-3,1) and tangent to the y-axis. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #846048 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=846048\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A\r<BR>\n" );
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document.write( "iven:<BR>\n" );
document.write( "•	Center: (1,0)\r<BR>\n" );
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document.write( "•	Point on the circle: (−3,2)<BR>\n" );
document.write( "We find the radius r by  the distance between the center and the given point by the distance formula:<BR>\n" );
document.write( "r=sqrt((x2−x1)^2+(y2−y1)^2)\r<BR>\n" );
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document.write( "Substitute the given coordinates \r<BR>\n" );
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document.write( "r=sqrt((−3)−1)^2+(2−0)^2)<BR>\n" );
document.write( "r = sqrt(20)<BR>\n" );
document.write( "r= 2 sqrt(5)\r<BR>\n" );
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document.write( "Equation of circle <BR>\n" );
document.write( "(x-1)^2+ (y-0)^2 = (2sqrt(5))^2\r<BR>\n" );
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document.write( "(x-1)^2+y^2= 20  ---------------------------A\r<BR>\n" );
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document.write( "Given: center (−3,1)<BR>\n" );
document.write( "Tangent to the y-axis<BR>\n" );
document.write( "Since the circle is tangent to the y-axis, the radius r is the horizontal distance from the center to the y-axis. The x-coordinate of the center is −3 \r<BR>\n" );
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document.write( "so the radius  𝑟 =3\r<BR>\n" );
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document.write( "(x−(−3)) ^2  +(y−1) ^2 = 3^2=9\r<BR>\n" );
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document.write( "(x+3)^2 +(y-1)^2 = 9 <BR>\n" );
document.write( " </SPAN>\n" );
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