Respuesta :

The graph has 3 parts

The decreasing part that slopes downwards, the increasing part that slopes upwards and the constant part that ends it as a straight line.

The decreasing part is that on the left side that begins from minus infinity on the negative x-axis and ends exactly at the origin before picking up.

Therefore, the interval of the graph decreasing starts from minus infinity to 0

[tex](-\infty,0)[/tex]