Question

write an equation, circle: center (-1,1); contains (2,-4)

Answer 1

Here are two equations. They give the same result but I don't know which one you'll need.

(x+1)^2+(y-1)^2=34
or
x^2+2x+y^2-2y-32=0

Hope this helps. Tell me if you need the steps :)

Answer 2

thank you !
and yes i just need to know what does the "contains (2, -4 ) means . Like how would you find that

Answer 3

It is the edge of the circle. The circle has to pass through (2, -4). If you calculate the distance between the center and the edge point, you'll get the radius.

Answer 4

ǝɯoɔlǝʍ ǝɹ,noʎ :)

Answer 5

wait but how do you find the radius ?