SOLUTION: How do you graph 3x^2+3y^2=21
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Question 437667:  How do you graph 3x^2+3y^2=21 
Answer by robertb(5830)   (Show Source): You can put this solution on YOUR website!
 Divide both sides by 3, to get .
This is the equation of a circle of radius  and center the origin (0,0). 
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