SOLUTION: P(2,0)and Q(0,-2)are two fixed points, find the equation of the locus of the moving point R such that PR:QR=1:2

Question 1036348: P(2,0)and Q(0,-2)are two fixed points, find the equation of the locus of the moving point R such that PR:QR=1:2
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
This might be a slow, inefficient way to the solution,
but I cannot think of a better one right now.
There must be a physics (electricity and magnetism) simulation program that graphs this locus nicely, but I do not see how it would help.

Since P and Q are different points, is a third different point.
and we know that , so
--><-->
Now we get to use and to find the equation representing the locus of point .

That is the equation of a circle,
centered at ,
with radius .
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