baahhnnii
baahhnnii
21-10-2016
Mathematics
contestada
What is the value of f(-1) when f(x)=2x+2
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sophiea317
sophiea317
21-10-2016
Plug (-1) into the x then you'll get 2(-1)+2 then you'll get 0 because -1 times 2 is -2 and -2 plus 2 equals 0
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elliotverdiguel
elliotverdiguel
21-10-2016
First plug in F(-1) into F(x)+2x+2
F(-1)=2(-1)+2
Solve
F(-1)= -1 + 2
F(-1)= 1
So when the function is -1, x equals 1
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