The graph of question 8 is a function
The function in number 8 is defined for all real values except at x = 0. Hence, the domain of the function is given by the interval
(- ∞, 0) ∪ ( 0, ∞)
Also, the range of the function is given by the interval
( 0, ∞)
From the image of question 8, we can see that the function increases on the interval from x = - ∞ to x = 0.
That is the function is increasing on the interval
(- ∞, 0)
Also, the function is decreasing on the interval from x =0 to x=∞
Hence the function is decreasing on the interval
( 0, ∞)