Basic Algebra/Lines (Linear Functions)/Graphing Points

Graphing points is as simple as counting. First, a grid is needed which we will call a graph. A set of given coordinates are needed to plot a point which can be called ordered pairs. Ordered pairs follow this format: (x, y). The first number represents where at the point lies in the x-direction. The second number represents where at the point lies in the y-direction, or how many units the point lies from the origin. For example, the coordinates (2, 3) tell you to move 2 units to the right on the x-axis, and 3 units up on the y-axis, then draw a point. For instance, if the coordinates given were (-5, 0) you would draw a point that is 5 units left of the origin (which is (0, 0)) and the point wouldn't go up or down because the second coordinate is 0. These points are often labeled as letters such as A, B, or C.

Last modified on 8 February 2011, at 21:34