document.write( "Question 920780: I'm just learning how to graph circles, and I was wondering if you guys can help with that. I am in eighth grade. One of my homework problems was to solve this system of equations
\n" ); document.write( "\"+x%5E2+%2B+y%5E2+=+9+\"
\n" ); document.write( "y = 2x
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Algebra.Com's Answer #558569 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
x^2 + (2x)^2 = 9
\n" ); document.write( "x^2 + 4x^2 = 9
\n" ); document.write( "5x^2=9
\n" ); document.write( "x^2=9/5
\n" ); document.write( "x = -3/sqrt(5)
\n" ); document.write( "x = +3/sqrt(5)\r
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\n" ); document.write( "\n" ); document.write( "now plug in those for x and find y
\n" ); document.write( "y = 2x
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