SOLUTION: What is f(x)=-2x-5 if f(-1)

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Question 987056: What is f(x)=-2x-5 if f(-1)
Found 2 solutions by Boreal, macston:
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
f(x)= -2x-5
f(-1) means everywhere you see an x, you put in a -1
f(-1)= -(2*(-1))-5
=+2-5=-3

Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
.
f(x)=-2x-5
.
f(-1)=-2(-1)-5 Substitute (-1) for x.
f(-1)=2-5
f(-1)=-3