Which of the following lines does not have y-intercept?

1. A horizontal line

2. A vertical line

3. y-axis

4. A transverse line

A y-intercept is the point where a line crosses the y-axis.

A vertical line: A vertical line has the equation x = a.

If a = 0 , it has an infinite number of y-intercepts.

If a ≠ 0 , the line is parallel to the y-axis and never crosses it. Therefore, it has no y-intercept.

Hence, option 2 is the correct option.