Answer:
If you are asking for the equation of a circle whose center and radius you need to determine given the equation, you could use (x + 3)^2 + (y - 5)^2 = 4. The center will be (-3, 5) and radius 2. So plot the center of the circle, then go up, down, left and right from the center 2 units.
If you need the circle drawn on the whiteboard first, then determine the equation, you could draw a circle with center at (2, 1) then another point that lies on the circle at (5, 5). Then you would need to use pythagoreans theorem or the distance formula to determine the radius. Since the slope triangle from the center at (2, 1) to (5, 5) is a 3 - 4 - 5 right triangle, the radius will be 5 units. So the equation will be (x - 2)^2 + (y - 1)^2 = 25.
Step-by-step explanation: