# Graphing Equations

Math
Terms

## Terms

Terms Terms
• ### Data Table

A list of x-values and their corresponding y-values.

• ### Negative Slope

y always decreases when x increases and y always increases when x decreases.

• ### Ordered Pair

A pair of numbers in a specific order. For example, (3, 7) and (8, - 1) are ordered pairs. Two ordered pairs are equivalent if their first members are equal and their second members are equal. However, the order of the two numbers is important; (1, 2) is not equivalent to (2, 1).

• ### Origin

The point (0, 0).

• ### Parallel Lines

Two lines are parallel if they have the same slope. Parallel lines, when extended, do not intersect at any point.

• ### Perpendicular Lines

Two lines are perpendicular if their slopes are opposite reciprocals of each other. Perpendicular lines intersect each other at right angles.

• ### Positive Slope

y always increases when x increases, and y always decreases when x decreases.

• ### Slope

Given two points (x1, y1) and (x2, y2) on a line, the slope of the line is equal to:

 m = • ### x-axis

The horizontal axis of a graph, with which the x-values are plotted.

• ### x-coordinate

The number which corresponds to the value of x in an ordered pair.

• ### x-intercept

The point at which the graph of a line crosses the x-axis. The point at which y = 0.

• ### xy-graph

A two-dimensional way of representing points. x-values are plotted with the horizontal axis, and y-values are plotted with the vertical axis.

• ### y-axis

The vertical axis of a graph, with which the y-values are plotted.

• ### y-coordinate

The number which corresponds to the value of y in an ordered pair.

• ### y-intercept

The point at which the graph of a line crosses the y-axis. The point at which x = 0.