Write the equation in graphing form of each circle described below. Homework Help ✎
A circle with radius 12 centered at the point (–2, 13).
A circle with center (–1, –4) and radius 1.
A circle with equation x2 + y2 – 6x + 16y + 57 = 0. (Hint: Complete the square for both x and y.)
(x − h)2 + (y − k)2 = r2
Refer to the hint in part (a).
Factor the expressions in parentheses and simplify.