y=4-2x
y=x-8
x-8=4-2x
12=3x
x=4
y=-4
A(-4;4)
4-2х=0
2х=4
х=2 (2;0) B
AB=(6;-4)
D=sqrt(36+16)=sqrt(52)
R=sqrt(13)
O(-1;2)
(x+1)^2+(y-2)^2=13
y=4-2x
y=x-8
x-8=4-2x
12=3x
x=4
y=-4
A(-4;4)
4-2х=0
2х=4
х=2 (2;0) B
AB=(6;-4)
D=sqrt(36+16)=sqrt(52)
R=sqrt(13)
O(-1;2)
(x+1)^2+(y-2)^2=13