SOLUTION: f(x)=4/2x-1, find f(-1) A. 4/3 B. 2 C. -2 D. -4/3

Algebra ->  Expressions -> SOLUTION: f(x)=4/2x-1, find f(-1) A. 4/3 B. 2 C. -2 D. -4/3      Log On


   

Question 169789: f(x)=4/2x-1, find f(-1)
A. 4/3
B. 2
C. -2
D. -4/3
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
f%28x%29=4%2F%282x-1%29 Start with the given function


f%28-1%29=4%2F%282%28-1%29-1%29 Plug in x=-1


f%28-1%29=4%2F%28-2-1%29 Multiply


f%28-1%29=4%2F%28-3%29 Subtract


f%28-1%29=-4%2F3 Reduce