A variety of electronic map tools can be used to calculate the number of miles between any two points on a map. The Pythagorean theorem can also be used if the component distances have been determined. More »

Several websites calculate or list the distance between cities both on the ground, for driving purposes, and in the air, for flying purposes. As of 2015, at least two websites calculate the distance between any two citie... More »

The website FreeMapTools.com offers a "How Far Is It Between" calculator that calculates the approximate distance between two cities. Additionally, Google Maps supplies the exact distance between two addresses. More »

Graphing inequalities on a number line requires you to shade the entirety of the number line containing the points that satisfy the inequality. Make a shaded or open circle depending on whether the inequality includes th... More »

Rational numbers are compared in a variety of ways, such as being placed on a number line or used with inequality symbols. Often, comparisons between rational numbers are simple relations that demonstrate which one is bi... More »

Electronic communication can be carried out in a variety of formats and using a variety of tools, including telephones, computers, fax machines, mobile pagers, smartphones and radio; these transmissions can involve video... More »

The formula for calculating the slope of a line when given two points, (x1, y1) and (x2, y2), is the difference in y coordinates divided by the difference in x coordinates. The slope, denoted as the letter m, equals (y2 ... More »