Yes. Longitude lines on a map are vertical and latitude lines are horizontal.
But it could be the other way around too. It depends on how you hold your map.
Yes.
A line running north and south/ up and down is called a vertical line.
There isn't any and that is why the slope of a vertical line is not defined.
run as in slope of a line is zero . horizontal lines have no slope and vertical lines have a slope of zero
north-south
North-South
Latitude lines are horizontal lines that run parallel to the equator on a map. They measure how far north or south a location is from the equator.
The prime meridian is the longitude (vertical) line that measures 0 degrees.
North and south.
When run = 0. That is to say, when the line is vertical.
Longitude lines appear "vertical" and latitude lines appear "horizontal." Every single line of longitude passes through the equator. If you meant to say latitude, then the answer is no. Not a single one (they run parallel).
A vertical line is NO SLOPE to ski on. That's how my Algebra teacher taught us to remember it. Slope is rise/run with run=0, so the slope is infinity or "No Slope"