Question

Can someone help me with this question?

Answer 1

f(x) = 2|x|
Try a few values of x in the domain -2 < x < 1 and find f(x). Then draw the graph.

x f(x)
-1.5 3
-1.0 ?
-0.5
0.0
+0.5

Answer 2

Yes f(x) = 2 times |x| and so you have to multiply |x| value by 2 to find f(x)

Answer 3

The plot will look something like this:


The domain -2 < x < 1 so you have to have open circle at -2 and -1 as those points are not included.