Question

Write the equation of a circle with center at (-3, -4) and a radius of 3.
A. (x - 3)2 + (y - 4)2 = 9
B. (x + 3)2 + (y + 4)2 = 9
C. (x + 3)2 + (y + 4)2 = 3
D. (x - 3)2 + (y - 4)2 = 3

Answer 1

Equation of a circle

\[(x - h)^2 + (y - k)^2 = r^2\]

Center = (h,k) so you replace the 'h' with -3 and the 'k' with -4
r = radius....so you replace 'r' with 3

so which does this look like?

Answer 2

is it A

Answer 3

NO D