SOLUTION: Given f(x)=2x+2, find f(-1) Show all work

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Question 117099: Given f(x)=2x+2, find f(-1)
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Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

Let's evaluate f%28-1%29


f%28x%29=2x%2B2 Start with the given function.


f%28-1%29=2%28-1%29%2B2 Plug in x=-1. In other words, replace each x with -1.


f%28-1%29=-2%2B2 Multiply 2 and -1 to get -2


f%28-1%29=0 Now combine like terms