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Care din punctele urmatoare apartin graficului functiei f:R sageata R,f (x)=-3x +2
A (1,-1)B (0,2) C (-2,-4) D (6,-16), E (2,-3),F (-3,-7)


Răspuns :

A (1,-1) => f(1) = -3 X 1 +2=-1 => A(1,-1) apartine Gf
B (0,2) =>f(0) = -3 X 0 +2 = 2 => B(0,2) apartine Gf
C (-2,-4) => f(-2) = -3 X (-2) +2 = 8 => C(-2,-4) nu apartine Gf
D(6,-16) =>f(6) = -3 X 6 +2 = -16 =>D(6,-16) apartine Gf
E(2,-3)=>f(2) = -3 X 2 + 2 = -4 =>E(2,-3) nu apartine Gf
F(-3,7) => f(-3) = -3 X (-3) +2 = 11 => F(-3,7) nu apartine Gf
A (1,-1) => f(1) = -3 X 1 +2=-1 => A(1,-1)
B (0,2) =>f(0) = -3 X 0 +2 = 2 => B(0,2) 
C (-2,-4) => f(-2) = -3 X (-2) +2 = 8 => C(-2,-4) 
D(6,-16) =>f(6) = -3 X 6 +2 = -16 =>D(6,-16) 
E(2,-3)=>f(2) = -3 X 2 + 2 = -4 =>E(2,-3) 
F(-3,7) => f(-3) = -3 X (-3) +2 = 11 => F(-3,7)