Get detailed and reliable answers to your questions with IDNLearn.com. Ask your questions and receive prompt, detailed answers from our experienced and knowledgeable community members.

the circle below is centered at (-1,1) and has a radius of 3. what is its equation?


Sagot :

Answer:

[tex](x+1)^2 + (y-1)^2 = 9\\\\or\\\\x^2 + y^2 +2x -2y -7 = 0[/tex]

Step-by-step explanation:

[tex](x +1 )^2 + (y -1)^2 = 3^2\\\\x^2 +2x +1 + y^2 + 1 -2y = 9\\\\x^2 + y^2 +2x -2y +2 -9 = 0\\\\x^2 + y^2 +2x -2y -7 = 0[/tex]