Question

What is the equation of this circle?

x2 + (y + 1)2 = 4

x2 + (y – 1)2 = 2

x2 + (y + 1)2 = 2

x2 + (y – 1)2 = 4

Answer 1

@tcarroll010

Answer 2

The diagram is the circle
\[x ^{2}+y ^{2}=4\]
when it has been given a translation
\[\left(\begin{matrix}0 \\ 1\end{matrix}\right)\]

Answer 3

the centre is(0,1)and radius is 2... so equation should be (x^2)+(y-1)^2=4