12 4/15 is the answer simplified
In the attached diagram you can see the graph of the function 
As you can see graph is:
1. increasing from x = −2 to x = −1
2. decreasing from x = 0 to x = 1
3. decreasing and then increasing from x=1 to x=2
4. increasing from x=2 to x=4.
Answer: correct choice is B.
put x=0 then y=4
put y=0 then x=-4
therefore 2 ccordintes are
(0,4) and (-4,0)
take a scale and construct a line joining these two points.
you will get the required graph.
hope it helps.
please follow if you like.
That is just absolute value, basically what it means is take off whatever sign there was attached to it (such as a negative sign)
So if we take 1/4 to be the 100%, what is 2/3 in percentage off of it then?

yes, is a large value, because 2/3 is indeed larger than 1/4, more than twice as large.