It's a third line, parallel to both and midway between them.
Chat with our AI personalities
you dont
It is a line that is also parallel to them and exactly halfway between them.
It's another line, parallel to both of the first two and midway between them.
The locus of points equidistant from lines y = 0 and x = 3 is the line y = -x + 3.
Assume that all distances are measured along the appropriate perpendicular. There is no specific name for the locus since the locus can be two or one straight lines, depending upon the original two lines. If the two lines are intersecting then the locus is a pair of straight lines that bisect the two angles formed by the original lines. If the original two lines are parallel, then the locus is a line parallel to them and halfway between them.