SOLUTION: which is an equation of the circle with a radius of 9 units and center at (-4,2) A.(x-9)^2+(y+4)^2=4 B.(x-4)^2+(y+2)^2=81 C.(x+4)^2+(y-2)^2=81 D.(x-2)^2+(y+4)^2=81

Algebra ->  Test -> SOLUTION: which is an equation of the circle with a radius of 9 units and center at (-4,2) A.(x-9)^2+(y+4)^2=4 B.(x-4)^2+(y+2)^2=81 C.(x+4)^2+(y-2)^2=81 D.(x-2)^2+(y+4)^2=81       Log On


   

Question 375363: which is an equation of the circle with a radius of 9 units and center at (-4,2)
A.(x-9)^2+(y+4)^2=4
B.(x-4)^2+(y+2)^2=81
C.(x+4)^2+(y-2)^2=81
D.(x-2)^2+(y+4)^2=81
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The general equation for a circle centered at (h,k) with a radius R is:
%28x-h%29%5E2%2B%28y-k%29%5E2=R%5E2
Compare.