(a) <span>For the circle with equation (x – 2)^2 + (y + 3)^2 = 9, answer each question: You have to recognize this circular equation form. (x-h)^2 + (y-k)^2 = r^2 where (h,k) is the center and r is the radius ------------------------------------------------ What are the coordinates of the center? Ans: (2,-3)
(B) </span>The Radius is the distance from the center outwards. The Diameter goes straight across the circle, through the center. The Circumference is the distance once around the circle<span>.
(C) </span><span>Realize that the circle is centered at the origin (no h and v) and place this point there.Calculate the radius by solving for r. Set r-squared = 16. ...Plot the radius points on the coordinate plane. ...Connect the dots to graph the circle using a smooth, round curve.</span>
