In this image,the distanceis foundby drawinga perpendicularsegmenton the graphand calculatingits
length.
Becausethis line segmentrises unitsand has no run, it is unitslong.The distancebetweenthe twolines on the graphis units.
Problemsinvolvingdistancesbetweenlineswill not alwaysbe this straightforward.You may haveto use
otherskills and tools to solvethe problem.The followingexampleshowshow you can applytools from algebra
to find the distancebetweentwo "slanted"parallellines.
Example 4
Whatis the distancebetweenthe lines shownon the graph?