If a line has no y-intercept, that means it never intersects the y-axis, so it must be parallel to the y-axis. This means it is a vertical line, such as `x=3` . This slope of this line is undefined.

If the line has no x-intercept, then it never intersects the x-axis, so it must be parallel to the x-axis. This means it is a horizontal line, such as `y=-5` . This slope of this line is zero.

A real-life situation of a line that has no y-intercept is the equation of a vertical wall. This is a line such as x=5.

A real-life situation of a line that has no x-intercept is the equation of a floor, such as the line y=10.

**Lines that have no y-intercept are vertical lines that are parallel to the y-axis, such as the line x=10. Lines that have no x-intercept are horizontal lines that are parallel to the x-axis, such as the line y=2.**