Question 42362
This was in our practice ,and I'm lost.

you have to plot X=-2..AS USUAL TAKE POINTS AND JOIN THEM
X=-2.......-2.........-2.....-2..........-2.....SINCE X HAS TO EQUAL -2 AS GIVEN. 
Y...........0...........1.....2...........3.......ETC....
SO WE GET A LINE PARALLEL TO Y AXIS AT A DISTANCE OF -2 FROM Y AXIS.