Answer:
D) x = 4
Step-by-step explanation:
The given line is x = 7.
This is a vertical line passes through the points (7, 0) (7, 1) (7, -1)......
Here the value of x coordinate do not change, it is a constant, the value of y-coordinate changes.
So, any equation x = a, (where "a" is the constant) represents the vertical line.
From the given choices.
x = 4 (4 is a constant)
Therefore, the x = 4 is parallel to the given equation x = 7.
Remember, in parallel equations, the slope will be the same.