The equation of circle with center at origin and passing through the point (-3,-1) is:

Step-by-step explanation:
The general form of equation of circle is:

If the center is at origin, then the equation will be:

Given point is: (-3,-1)
The distance of the point from origin will be the radius
The distance of any point from the origin is given by:

Putting the value of r in standard equation

The equation of circle with center at origin and passing through the point (-3,-1) is:

Keywords: Equation of circle, Radius
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