[tex]\displaystyle\bf\\y=-5x+b\\\\\\C(10 \ ; \ -52) \ \ \ \Rightarrow \ \ \ x=10 \ \ , \ \ y=-52\\\\\\-52=-5\cdot10+b\\\\\\-52=-50+b\\\\\\b=-52+50=-2\\\\\\Otvet: \ b=-2[/tex]
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[tex]\displaystyle\bf\\y=-5x+b\\\\\\C(10 \ ; \ -52) \ \ \ \Rightarrow \ \ \ x=10 \ \ , \ \ y=-52\\\\\\-52=-5\cdot10+b\\\\\\-52=-50+b\\\\\\b=-52+50=-2\\\\\\Otvet: \ b=-2[/tex]