verify the functions are inverses:
1. f(x)=x+7 g(x)=x-7
2. f(x)=2x+1 g(x)=1/2x-1/2
3. f(n)= (-16+n)/4 g(n)=4n+16
4. f(x)=x^2-9 g(x)=x+3

Question

verify the functions are inverses:
1. f(x)=x+7 g(x)=x-7
2. f(x)=2x+1  g(x)=1/2x-1/2
3. f(n)= (-16+n)/4  g(n)=4n+16
4. f(x)=x^2-9 g(x)=x+3

anonymous · Answer

compose them and see that you get $x$ back 
for example 
$$f\cir g(x)=f(g(x))=f(x-7)=x-7+7=x$$ for the first one

anonymous · Answer

@satellite73 I got x for both

anonymous · Answer

can anyone help with #3 thats the one I'm struggling with the most??

bradely · Answer

1. f(x)=x+7 let y = x+7 y = x+7 x = y-7 f^(-1) (x) = x-7 = g(x) Both are inverse functions Step by step solution http://www.mathskey.com/question2answer/