document.write( "Question 606483: For the following general form of a circle, find the value of \"a\" if the center is at (1/3, 4/3). Use this value of \"a\" to find the radius of a circle. Make sure to write it in simplified rationalized form.
\n" );
document.write( "3x^2-2x+3y^2-ay-27=0
\n" );
document.write( "I know you would group it just as you would any other equation when you are going from general to standard, but I am confused as to what to do with the -ay. Help please. \n" );
document.write( "
Algebra.Com's Answer #382117 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! For the following general form of a circle, find the value of \"a\" if the center is at (1/3, 4/3). Use this value of \"a\" to find the radius of a circle. Make sure to write it in simplified rationalized form. \n" ); document.write( "3x^2-2x+3y^2-ay-27=0 \n" ); document.write( "complete the square \n" ); document.write( "3(x^2-2x/3+1/9)+3(y^2-ay+a^2/4)=27+1/3+3/2=27+11/6 \n" ); document.write( "3(x-1/3)^2+3(y-a/2)^2=173/6 \n" ); document.write( "a/2=4/3 \n" ); document.write( "a=8/3 \n" ); document.write( "equation of given circle: \n" ); document.write( "3(x-1/3)^2+3(y-4/3)^2=173/6 \n" ); document.write( "radius^2=173/6 \n" ); document.write( "radius=√(173/6)=√1038/6 \n" ); document.write( " |