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

Answer 1

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

Answer 2

@satellite73 I got x for both

Answer 3

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

Answer 4

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
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