SOLUTION: if f(x)=4x-3, find the following f(-1)

Algebra ->  Linear-equations -> SOLUTION: if f(x)=4x-3, find the following f(-1)      Log On


   

Question 119681: if f(x)=4x-3, find the following
f(-1)
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

if f%28x%29=4x-3, then f%28-1%29 will be:
f%28x%29=4x-3............replace x with -1
f%28-1%29=4%28-1%29-3
f%28-1%29=+-+4+-+3
f%28-1%29=+-+7+