y = kx + b, (1)
k - , . . , Ox, Ox , b - , . b = 0 (1) y = kx .
(1) , Ox.
y.
Ax + By + C = 0. (2)
:
) C = 0, (2)
Ax + By = 0,
, , , x = 0, y = 0 .
) (2) B = 0,
Ax + = 0, .
y, Oy.
) (2) A = 0,
By + = 0, ;
x, Ox.
: - , , , .
) C = 0 A = 0 (2) By = 0, y = 0.
Ox.
) C = 0 B = 0 (2) Ax = 0 x = 0.
Oy.
(3)
a - , Ox; b - , Oy.
.
: , a b , , .
(4)
p - , , , - , Ox. Ox . (2) :
(5)
, C (2).
: , , .