Practice problem
Write an equation of the circle centered at (−9,9)(-9,9)(−9,9) with radius 161616.
(x−9)2+(y+9)2=256(x-9)^2+(y+9)^2=256(x−9)2+(y+9)2=256
(x+9)2+(y−9)2=256(x+9)^2+(y-9)^2=256(x+9)2+(y−9)2=256
(x−9)2+(y+9)2=4(x-9)^2+(y+9)^2=4(x−9)2+(y+9)2=4
(x+9)2+(y−9)2=4(x+9)^2+(y-9)^2=4(x+9)2+(y−9)2=4
Type a concept, like “slope” or “photosynthesis”.