sat suite question viewer
In the xy-plane, the graph of the given equation is a circle. What are the coordinates of the center of the circle?
Explanation
Choice D is correct. Itβs given that in the xy-plane, the graph of is a circle. The equation of a circle in the xy-plane can be written as , where the coordinates of the center of the circle are and the radius of the circle is . By completing the square, the equation can be rewritten as , or . This equation is equivalent to , or . Therefore, is and is , and the coordinates of the center of the circle are .
Choice A is incorrect and may result from conceptual or calculation errors.
Choice B is incorrect and may result from conceptual or calculation errors.
Choice C is incorrect and may result from conceptual or calculation errors.