Question

A circle is described by the equation (x−12)2+(y−32)2=49. What are the cordinates for the center of the circle and the length of the radius?

(-12,-32), 23units

(-12,-32), 49units

(12,32), 49units

(12,32), 23units

Answer 1

do you know the general form for circle?

Answer 2

\[\large (x-h)^{2}~+~(y-k)^{2}=r^{2}\]
\[\large (h,k)~=~Center~coordinates~of~circle\]
\[\large r~=~radius\]

Answer 3

that's a lot of letters and where do they exist in a graph?

Answer 4

So if we break down each part it will look like this \[\large (x-h)^{2}~=~(x-12)^{2}\] From that, what would h be? \[\large (y-k)^{2}~=~(y-32)^{2}\] From that, what would k be? \[\large r^{2}~=~49\] From that, what would r be?