Question

Please help!!!
What is the standard form of the equation of the circle in the graph?
A. (x + 3)^2 + (y - 1)^2 = 1
B. (x - 3)^2 + (y + 1)^2 = 2
C. (x - 3)^2 + (y + 1)^2 = 1
D. (x + 3)^2 + (y - 1)^2 = 2

Answer 1

okay, so the standard form of a circle is (x-h)^2+(y-k)^2=1

Answer 2

(h,k) is the center of the circle

Answer 3

ok

Answer 4

which answer did you get

Answer 5

i don't understand what numbers i'm plugging into the equation....

Answer 6

okay so you know that the formula for a circle will always equal 1

Answer 7

what are is the h and k of the center of your circle? h is your x coordinate and k is your y coordinate

Answer 8

(-3,1)

Answer 9

okay so now plug those numbers into the equation (x-h)^2+(y-k)^2=1, you don't have to solve

Answer 10

(x+3)^2+(y-1)^2=1

Answer 11

yes!

Answer 12

thank you :)