Determine if Injective (One to One) f(x)=x-4

$f (x) = x - 4$

Step 1

Write $f (x) = x - 4$ as an equation.

$y = x - 4$

Step 2

A function is said to be injective or one-to-one if every y-value has only one corresponding x-value.

Injective (One-to-One)

Step 3