SOLUTION: Confirm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x.
f(x) = 9x + 3 and g(x) = Quantity x minus three divided by nine
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Question 764725: Confirm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x.
f(x) = 9x + 3 and g(x) = Quantity x minus three divided by nine
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
f(x) = 9x + 3
g(x) = (x -3)/9
f(g(x)) = 9( x -3/9) + 3
Cancel 9s
f(g(x)) = x - 3 + 3
f(g(x)) = x
.............
g(f(x)) = ((9x + 3) - 3)/9
+3-3 = 0
g(f(x)) = 9x/9
g(f(x)) = x
:-)
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