Question

find the inverse function of
4,7
6,2
9,-1
11,3

Answer 1

so 4 goes to 7 ( add 3) --> f(x) = x+3 the inverse function is f(x) = 1/x+3
so 6 goes to 2 (subtract 4) ---> f(x) = x - 4 so inverse function f(x) = 1/x-4
You get the idea!