Question

What is the general form of the equation for the given circle centered at O(0, 0)?

Answer 1

the general equation is

(x-h)^2 + (y-k)^2 = r^2

Answer 2

since the center is (0,0), we know (h,k) = (0,0)

so just replace h and k with 0

(x-h)^2 + (y-k)^2 = r^2

(x-0)^2 + (y-0)^2 = r^2

x^2 + y^2 = r^2

Answer 3

then you replace r with whatever radius you want

Answer 4

@jim_thompson5910 hold on cause I still dont exactly understand

Answer 5

where are you stuck?

Answer 6

@jim_thompson5910

Answer 7

I see

Answer 8

what is the distance from the center to the edge point?

Answer 9

See thats the thing, I dont remember what my notes said and I cant go back and look at them

Answer 10

you left them at school or something?

Answer 11

@jim_thompson5910 But I don't want to say its 4,5 cause I just know that is wrong

Answer 12

hint:

Answer 13

Ok. So I guess and I got it correct. @jim_thompson5910

Answer 14

@jim_thompson5910 this was the answer x2 + y2 − 41 = 0 but I dont understand honest.

Answer 15

you use the pythagorean theorem to solve for x