System%20of%20Inequalities

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System of Inequalities
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Warm Up
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Graphing Linear Inequalities

• Follow the steps for graphing equations,
• But.

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• ..DONT DRAW THE LINE YET!!!!

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Inequality Symbols
TYPE OF LINE
SHADING
SOLID
ABOVE THE LINE
DOTTED
BELOW THE LINE
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Review
INEQ symbol?

• SOLID LINE

• SHADE
• BELOW

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When you graph a system of inequalities, you just
have to graph the two inequalities and look for
where the shading intersects!
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Now lets graph a system!
This area is the SOLUTION!
First, graph
Now, graph
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Lets graph another one!
First we must solve for y to get these ready to
graph!
DIVIDE BY A NEG. and FLIP!!
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Now graph it to solve!!
This area is the SOLUTION!
First, graph
Now, graph
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Are the following points solutions?
NO
YES
NO
NO
NO
YES
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Tell your neighbor

• What is one possible solution of a system of
  inequalities?