Find the Decreasing Domain: Analyzing Function f(x) from -2 to 19

Question

In which domain does the function decrease?

00:00 Find the domain of decrease of the function

00:03 The function decreases when X values increase and Y values decrease

00:07 From this point the function begins to increase

00:18 We'll deduce from this the domain of decrease

00:25 And this is the solution to the question

Let's remember that the function increases when X values and Y values increase simultaneously.

On the other hand, the function decreases when X values increase and Y values decrease simultaneously.

According to the given value table, we can see that in the domain where $x < 0$ X values increase and Y values decrease simultaneously.

Therefore, the function decreases in the domain where

$x < 0$

$x<0$