. Find the equation of the circle that satisfies the conditions. Graph each circle a. Radius 8, center (3, -5) b. Center (6, -3) with the point (1, 2) on the circle

Answer 1

r=8, center (3, -5)

(x-3)^2 + (y+5)^2 = 64

(x-6)^2 + (y+3)^2 = r^2

plug in the point (1,2) to solve for r

(1-6)^2 + (2+3)^2 = r^2

r^2 = 25+25= 50

r = 5sqr2

the equation is (x-6)^2 + (y+3)^2 = 50