Determine if Injective (One to One) f(x)=(x+2)/(x-9)

$f (x) = \frac{x + 2}{x - 9}$

Step 1

Write $f (x) = \frac{x + 2}{x - 9}$ as an equation.

$y = \frac{x + 2}{x - 9}$

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