The name Delphia is of English origin. The meaning of Delphia is brother. Delphia is generally used as a girl's name. It consists of 7 letters and 3 syllables and is pronounced Del-phi-a.
Perpendicular Lines. Quatr.us Math Geometry Lines. Perpendicular lines. Two lines are perpendicular if they cross at right angles. You can test this by extending the lines until they cross (if they do not cross then they are parallel).erpendicular Lines. Quatr.us Math Geometry Lines. Perpendicular lines. Two lines are perpendicular if they cross at right angles. You can test this by extending the lines until they cross (if they do not cross then they are parallel).
Sections: Slope-intercept form, Point-slope form, Parallel and perpendicular lines. There is one other consideration for straight-line equations: finding parallel and perpendicular lines. Here is the usual format for the question: 1  Given the line 2x â 3y = 9 and the point (4, â1), find lines through the point that are:his is the parallel line that they asked for. For the perpendicular line, I have to find the perpendicular slope. The reference slope is m = 2/3, and, for the perpendicular slope, I'll flip this slope and change the sign. Then the perpendicular slope is m = â 3/2.