9000091209 Level: AConsider the circle \(k\colon x^{2} - 6x + y^{2} + 4y + 9 = 0\). Find the center of the circle.\(S = [3;-2]\)\(S = [-3;-2]\)\(S = [3;2]\)\(S = [-3;2]\)
9000097002 Level: BConsider the parabola \((x - 4)^{2} = 8(y + 1)\). Find the vertex of this parabola.\([4;-1]\)\([4;1]\)\([1;4]\)\([4;8]\)
9000091210 Level: AConsider the circle \(k\colon x^{2} + 8x + y^{2} - 2y + 12 = 0\). Find the center of the circle.\(S = [-4;1]\)\(S = [-4;-1]\)\(S = [4;1]\)\(S = [4;-1]\)
9000097003 Level: BConsider the parabola \((x + 1)^{2} = 4(y - 3)\). Find the focus of this parabola.\([-1;4]\)\([-1;3]\)\([3;-1]\)\([0;3]\)
9000091203 Level: AConsider the circle \(x^{2} - 2x + y^{2} - 6y + 8 = 0\). Find the radius of the circle.\(\sqrt{2}\)\(2\)\(3\)\(4\)