Function Analysis at -1: Determining Increasing or Decreasing Behavior

Determine whether the function is increasing, decreasing, or constant. Check your answer with a graph or table.

For each number corresponding to the number $-1$.

The function is:

$f(x)=x-1$

Let's start with x equal to 0:

$f(0)=0-1=-1$

Now let's assume x is equal to 1:

$f(1)=1-1=0$

Now let's assume x is equal to 2:

$f(2)=2-1=1$

Now let's assume x is equal to minus 1:

$f(-1)=(-1)-1=-2$

Let's plot all the points on the function graph:

It appears that the function we obtained is an increasing function.