SOLUTION: If f(x)=4x-3 find f(-1)

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Question 120275: If f(x)=4x-3
find
f(-1)

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

If f%28x%29=4x-3
find
f%28-1%29
f%28x%29=+4x+-3...substitute x with -1
f%28-1%29=4%28-1%29-+3
f%28-1%29=+-4+-3
f%28-1%29=+-7