What is the absolute value of −4?

The absolute valeu of a number is the distance between it and 0, that means that the absolute value of a negative or positive one is a positive

So, in this case, we have a negative number, which is -4, and, as we know, an absolute value of a number is positive, so we need to change their sign.

|-4| = 4..

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.