The Figure

shows the unit circle, i.e., the circle around the origin with radius $r=1$. It is defined by the equation $$x^2+y^2=1.$$ As with any equation, other circles can be obtained by scaling and shifting. The circle in this Figure

is the graph of the equation
$(x-$ $)^2+$(y- $)^2 =$ ${}^2$.
Hint: Obtain from the Figure the center and the radius of the circle, and then write down the standard equation of the circle. Notice that some of your results may be negative.