-7, because you distribute it to both -4 and 3.2, which means you're multiplying it to both.
Go up six on the y intercept. Then from 6 go up 1 and over 4.
Why not actually graph |x|=1? You will find that x = 1 and x = -1 are solutions.
Thus, "closed circles on -1 and 1 with no line" is correct.
