Linear Relationships
The language of linear graphs
A linear graph is a straight line graph that shows the relationship between two variables. Any point along the line can be represented by coordinates, an x-coordinate and a y-coordinate. These coordinates are written in an ordered pair (x, y). The ordered pair of (0, 0) is known as the origin.
The graphs are represented on a Cartesian plane that has an x-axis that runs horizontally, and a y-axis that runs vertically. The x-intercept of a graph is the point where the line crosses the x-axis. The y-intercept of a graph is the point where the line crosses the y-axis. The point where two linear lines cross each other is known as the point of intersection.
The graphs are represented on a Cartesian plane that has an x-axis that runs horizontally, and a y-axis that runs vertically. The x-intercept of a graph is the point where the line crosses the x-axis. The y-intercept of a graph is the point where the line crosses the y-axis. The point where two linear lines cross each other is known as the point of intersection.