Graphing systems of inequalities in the coordinate plane
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Lesson Summary:
This lesson teaches how to graph systems of linear, two-variable inequalities in the coordinate plane. The video explains how to find the x and y intercepts and how to use them to graph each inequality. It also goes over shading the areas to find the solution set for the system of inequalities. By the end, viewers will be able to graph these types of inequalities and find the solutions to the system.
Lesson Description:
This video is on graphing systems of linear, 2 variable inequalities in the coordinate plane.
This vid was created using Jing by TechSmith & with the help of Ian Vogt's linear equation / inequality graphing applet(http://mathgraph.idwvogt.com/GraphPpr.html) for graphing.
Additional Resources:
- Interactive Graph Paper Tool - A neat interactive Graph Paper tool that allows you to graph and shade lines.
Questions answered by this video:
- How do you graph a system of 4 inequalities in 2 variables in the x-y plane?
- How do you graph x + 3y <= 12?
- How do you graph 2x + y <= 12?
- How do you graph x >= 0?
- How do you graph y >= 0?
- How do you graph an inequality in standard form using intercepts?
- How can you find the x-intercept and y-intercept of an inequality?
- How do you know which side of a line to shade on with inequalities?
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Staff Review
This lesson goes through an excellent example of graphing 4 different linear inequalities on the same graph, shading, and finding the intersection of all 4 shaded areas. All steps for graphing the lines and shading are explained very well. Unfortunately, the video cuts out at 5:00, although the instruction is basically finished. -
jacqui
I only wish I could HEAR the lesson! From the Staff Review, it sounds like it'd really help me right now... but the volume is too low even when I turn up my laptop volume and the volume on screen...
