What is the center of the circle represented by this equation? x2 + (y + 9)2 = 25
Mathematics
cornuelisfloyd1
Question
What is the center of the circle represented by this equation?
x2 + (y + 9)2 = 25
x2 + (y + 9)2 = 25
1 Answer

1. User Answers prestonshelton
Hello!
The equation for a circle is
[tex](x  h)^{2} + (y  k)^{2} = r^{2} [/tex]
(h, k) is the center
You find what numbers make the equation
Since x is not subtracted from anything h = 0
Since k is positive k is the negative of that number
The equation isĀ [tex] (x  0)^{2} + (y  9)^{2} = 25[/tex]
The center is (0, 9)
Hope this helps!