Question

What’s the inverse of f(x)=2x+3

Answer 1

Answer: f-1(y) = (y-3)/2

Explanation:

f(x) = 2x+3, written as a flow diagram:

2x+3

The Inverse Function goes the other way:

Inverse

So the inverse of: 2x+3 is: (y-3)/2

The inverse is usually shown by putting a little "-1" after the function name, like this:

f-1(y)

We say "f inverse of y"

So, the inverse of f(x) = 2x+3 is written:

f-1(y) = (y-3)/2

Answer 2

f^-1 (x) = 1/2x + 3/2

Explanation:

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