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Answer :

Answer:

a= 10; b= 4; c= -2 ;d = -5

Step-by-step explanation:

[tex]f(x) = 1-3x\\f(-3) = 1-3(-3)=1-(-9)=1+9=10\\f(-1) = 4\\f(1) = -2\\f(2)=-5[/tex]