Horizontal lines run left to right, parallel to the horizon, with slope 0 and equation y = k. Vertical lines run top to bottom, perpendicular to the horizon, with undefined slope and equation x = k.

A horizontal merger is a merger or business consolidation that occurs between firms that operate in the same industry, usually as larger companies attempt to create more efficient economies of scale.

Historically, resolution is understood to mean “limiting resolution,” or the point at which adjacent elements of an image cease to be distinguished. Various disciplines measure and specify resolution ...