2. What is the center and radius of (x+1)^2+(y+3)^2=25??
Thank you so much in advance. I really appreciate it. (:
Thank you so much in advance. I really appreciate it. (:
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1.)
x^2 + 12x + y^2 + 4y = -31
(x + 6)^2 - 36 + (y + 2)^2 - 4 = -31
(x + 6)^2 + (y + 2)^2 = 9
Center = (-6, -2), Radius = 3
2.)
Center = (-1, -3), Radius = 5
Note that if you have an equation of a circle of the form (x - h)^2 + (y - k)^2 = r^2, then (h, k) is the center and r is the radius of the circle.
x^2 + 12x + y^2 + 4y = -31
(x + 6)^2 - 36 + (y + 2)^2 - 4 = -31
(x + 6)^2 + (y + 2)^2 = 9
Center = (-6, -2), Radius = 3
2.)
Center = (-1, -3), Radius = 5
Note that if you have an equation of a circle of the form (x - h)^2 + (y - k)^2 = r^2, then (h, k) is the center and r is the radius of the circle.