M ( - 4 ; 8 )
N ( 0 ; - 6 )
y = kx + b
8 = - 4k + b
- 6 = b
b = - 6
8 = - 4k - 6
- 4k = 14
k = - 3,5
Уравнение прямой y = - 3,5x - 6
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ax + by = c
by = - ax + c
y = - 3,5x - 6
2y = - 7x - 12
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b = 2
a = 7
c = - 12