#### Answer

x=-4

#### Work Step by Step

Two points clearly on the line are (-4,0) and (-4,1). By going from one point to the other, we see that we move up 1 units and to the right 0 unit, giving us a rise/run slope that's undefined.
Since the line crosses the x-axis at (-4,0), the x intercept is b=-4.
Therefore, our line is:
x=-4.