document.write( "Question 851811: Write the standard equation of a circle with each given radius and center.\r
\n" ); document.write( "\n" ); document.write( "1. r = 4; C= (0, 0)\r
\n" ); document.write( "\n" ); document.write( "2. r = 1; C = (2, 3)\r
\n" ); document.write( "\n" ); document.write( "3. r = 4; C = (-2, 8)\r
\n" ); document.write( "\n" ); document.write( "Write the standard equation for the circle given the following equations.\r
\n" ); document.write( "\n" ); document.write( "4. x^2 + y^2 - 8x + 7 = 0\r
\n" ); document.write( "\n" ); document.write( "5. x^2 + y^2 + 4x - 6y - 3 = 0 \n" ); document.write( "

Algebra.Com's Answer #513000 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
\n" );
document.write( "Hi,
\n" );
document.write( "Standard Form of an Equation of a Circle is  
\n" );
document.write( "where Pt(h,k) is the center and r is the radius
\n" );
document.write( " 1 - 3 use above, substitute values given
\n" );
document.write( "4 & 5 Completing the Square:
\n" );
document.write( "4. (x-4)^2 + y^2 = -7 + 16 = 9  
\n" );
document.write( "   
\n" );
document.write( " (x+2)^2 + (y-3)^2 = 3 + 4 + 9 = 16
\n" );
document.write( "    \n" );
document.write( "

\n" );