Graphing lines
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This document discusses how to graph linear equations on a Cartesian coordinate system using either a single point and the slope of the line, or two points on the line. It explains that the coordinate system has four quadrants defined by positive and negative x and y axes, and that all points are plotted using an x and y coordinate written as (x,y) relative to the origin point.
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Graphing lines
- 1. Graphing Linear EquationsGraphing Linear Equations Linear Equations can be graphed onLinear Equations can be graphed on a Cartesian Coordinate systema Cartesian Coordinate system
- 2. x-axis y-axis Cartesian Coordinate systemCartesian Coordinate system
- 3. Quadrant IQuadrant II Quadrant III Quadrant IV x-axis y-axis Origin
- 4. All points on a graph are plotted by firstAll points on a graph are plotted by first finding the x-coordinate and then thefinding the x-coordinate and then the y-coordinatey-coordinate All points are written in the form ( x , y )All points are written in the form ( x , y ) You always graph a point starting fromYou always graph a point starting from thethe OriginOrigin
- 5. Quadrant IQuadrant II Quadrant III Quadrant IV x is positive y is positive x is negative y is positive x is negative y is negative x is positive y is negative
- 6. Point (3,5)
- 7. In order to graph a line, you need toIn order to graph a line, you need to know either:know either: A point and theA point and the Slope of the lineSlope of the line Two points on theTwo points on the lineline OROR