Top left. > Arguments for "bottom left": the y-value corresponds to the height; that's how it's taught in math class Not quite, in math class (0,0) is the cen

Top left. > Arguments for "bottom left": the y-value corresponds to the height; that's how it's taught in math class Not quite, in math class (0,0) is the center and you can go positive and negative on both axes. You would be taking the coordinate system from math class and limiting everything to the first quadrant which doesn't seem natural at all (in computer graphics or in math).