Answer
circle
Work Step by Step
We can see that both x and y are on the power of two with the same coefficients. This given equation can be easily transformed to the general equation of circle whose center is at the origin and a radius $r$:
$x^2+y^2=R^2$
Here, it is:
$x^2+y^2=12^2$
Therefore, it is a circle with the center of $(0,0)$, and with the radius of 12.
