Hello,
Well none of these lines represents a line parallel to the y-axis except for B.
A line that is parallel to the y-axis is x = k, where 'k' is a constant value. This means that for any value of 'y', the value of 'x' is the same.
And a line that is parallel to the x-axis is y = k where 'k' is a constant value.
Good Luck :)
