Question

What is the general form of the equation for the given circle? PointA:(4,7) PointB:(7,4)

x2 + y2 − 8x − 8y + 23 = 0



x2 + y2 − 8x − 8y + 32 = 0



x2 + y2 − 4x − 4y + 23 = 0



x2 + y2 + 4x + 4y + 9 = 0

Answer 1

if we plug in x = 4 y =7 and x = 7 y = 4 into the first equation you'll see they both fit

So its A