What is the image,x^2 +y^2 + 2x- 9 = 0, after a reflection in the liney= -x+ 1?

I don't even know where to start...

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- Jul 21st 2010, 02:57 PMMATNTRNGReflection
What is the image,

*x*^2 +*y*^2 + 2*x*- 9 = 0, after a reflection in the line*y*= -*x*+ 1?

I don't even know where to start... - Jul 21st 2010, 06:16 PMskeeter
- Jul 27th 2010, 10:44 PMsimplependulum
Replace with respectively .

Then the equation obtained , is the reflected image .

The answer is .