**THE PROPER PICTURE for the question is posted above in this topic.**Note, that the line

*x* = -4 is parallel

**to the ***y*-axis and crosses the

*x*-axis at the point (-4, 0).

The line

*y* =

*x* and the line

*y* = -4 are different lines. These two lines cross at the point (-4, -4), which happens to be the crossing point of the lines

*y* =

*x* and

*x* = -4 as well.

The following picture demonstrates that the lines

*y* =

*x* and

*y* = -4 are different:

**THE PROPER PICTURE for the question is posted above in this topic.**