Answer:
Step-by-step explanation:
Given that center of the circle is at (0,0) and it passes through a point (-1,-3).
Now we need to write the equation of the circle with given center and point on the circle.
So let's plug given values into standard formula of the circle
there (h,k) gives center of the circle then h=0, k=0
So we get equation :
...(i)
plug the given point (-1,-3) that is x=-1 and y=-3 into (i)
plug above value into (i)
Hence final answer is