Question

Am I correct?
A circle has its center at (1, 4) and a radius of 2 units. What is the equation of the circle?

(x - 1)2 + (y - 4)2 = 4

(x + 2)2 + (y + 4)2 = 2

(x + 1)2 + (y - 4)2 = 4

(x - 1)2 + (y - 4)2 = 2

* I think the answer is the 4th choice*

Answer 1

The circle formula is (k-x)^2 + (k -y)^2 = r^2
For your formula, the answer is A

Answer 2

ok thanks yeah that radius part is what i was not sure of

Answer 3

^

Answer 4

The right side is r^2, they just expand it, 2^2=4

Answer 5

thanks :)