A circle has a diameter with endpoints (-10, -6) and (-2, -4).

What is the equation of the circle?

A.r2 = (x + 4)2 + (y + 5)2
B.r2 = (x + 6)2 + (y + 5)2
C.r2 = (x + 4)2 + (y + 1)2
D.r2 = (x + 6)2 + (y - 1)2

Question

A circle has a diameter with endpoints (-10, -6) and (-2, -4).

What is the equation of the circle?



A.r2 = (x + 4)2 + (y + 5)2
B.r2 = (x + 6)2 + (y + 5)2
C.r2 = (x + 4)2 + (y + 1)2
D.r2 = (x + 6)2 + (y - 1)2

anonymous · Answer

Help anybody ?

zepdrix · Answer

|dw:1378481381663:dw|So this is our diameter right? We'll want to use the distance formula to find the length of the diameter.

Oh nevermind they left it in terms of r^2 lol.
This is a bit easier than I thought :P