Solving Inequalities in 2 Variables

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# Solving Inequalities in 2 Variables - PowerPoint PPT Presentation

Solving Inequalities in 2 Variables. Thursday, February 6, 2014. What are the rules?. How do you graph a line? You graph an inequality basically the same way… you need to isolate y. If it can’t be equal, it’s like a regular inequality when you graph… the open circle becomes a dotted line.

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### Solving Inequalities in 2 Variables

Thursday, February 6, 2014

What are the rules?
• How do you graph a line?
• You graph an inequality basically the same way… you need to isolate y.
• If it can’t be equal, it’s like a regular inequality when you graph… the open circle becomes a dotted line.
• If it can be equal, then like the closed circle, your line is solid.
Let’s try graphing and solving…
• Graph and pick a point. Does the point satisfy the inequality?
• Do a few more. Do you see a pattern?
• Are the answers above or below the line?
• When?