What is the solution to the system of equations graphed below?

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

Math each whole number with a rational,exponential expression

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b