# How do i use composition of functions to determine whether the functions in each pair are inverse functions?

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y=2x-3 and y=2x+3

y=2x-3 and y=2x+3

##### 1 Answer

f(g(x)) does not equal x, so the functions are not inverses.

#### Explanation:

This is how to figure this out:

Write

Determine:

So, since f(g(x)) doesn't equal x, the functions are not inverses!

Hope this helps!