Question

Which is an equation of a circle with center (2,-1) that passes through the point (3,4)?

Answer 1

the last one because the center is h, k and the radius is the distance between the 2 points squared

Answer 2

they are the opposite of the x and y so has to be
(x-2)^2 + (y+1)^2 and if you sub the points it passes through into the equation you get 26. its the last one