\[C(10; - 52):\]
\[y = - 5x + b\]
\[- 5 \cdot 10 + b = - 52\]
\[- 50 + b = - 52\]
\[b = - 52 + 50\]
\[b = - 2.\]
\[Ответ:b = - 2.\]