Answer:
H. x = 1 , slope is undefined
Explanation:
The slope of a vertical line is always undefined.
If you think about it, no matter what y value you use, the x will always be 1 (In this equation). Such as:
(1, 5)
(1, 8)
(1, -12914)
(1, 272)
With x always being one, it forms a vertical line parallel to the y-axis