Question

6. What is the equation of a circle with center (7, 2) and radius 2?O(x + 7)2 + (y + 2)2 = 4(x - 7)2 + (y – 2)2 = 4(x - 7)2 + (y - 2)2 = = 2(x + 7)2 + (y + 2)2 = 2

Answer 1

The standard equation of a circle is given by:

$(x-h)^2+(y-k)^2=r^2$

Where (h,k) is the coordinates of center of the circle and r is the radius, so:

$\begin{gathered} V(h,k)=(7,2) \\ r=2 \\ (x-7)+(y-2)=2^2 \\ (x-7)+(y-2)=4 \end{gathered}$