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Observe the graph : \ \

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$\"\"$ is a solid line. \ \

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To determine which symbol to be used to write the linear inequality, take a test point in either half- plane. \ \

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A simple choice is $\"\"$ . \ \

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Substitute $\"\"$ in $\"\"$ . \ \

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$\"\"$ \ \

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Since the line is solid line, take the inequality symbol as $\"\"$ . \ \

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Thus, the linear inequality is $\"\"$ . \ \

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\ \

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Find the solid line passing through the points $\"\"$ and $\"\"$ . \ \

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Let the points be $\"\"$ and $\"\"$ . \ \

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Line equation passing through two points is $\"\"$ . \ \

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Substitute the points $\"\"$ and $\"\"$ in above equation. \ \

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$\"\"$ \ \

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$\"\"$ . \ \

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To determine which symbol to be used to write the linear inequality, take a test point in either half- plane. \ \

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A simple choice is $\"\"$ . \ \

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Substitute $\"\"$ and $\"\"$ in the line equation $\"\"$ . \ \

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$\"\"$ \ \

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Since the line is solid line, take the inequality symbol as $\"\"$ . \ \

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Thus, the linear inequality is $\"\"$ . \ \

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\ \

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Observe the graph: \ \

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Consider all values of $\"\"$ , whose values are greater than or equals to zero. \ \

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Thus, the linear inequality is $\"\"$ . \ \

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\ \

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Observe the graph : \ \

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Consider all values of $\"\"$ , whose values are greater than or equals to zero. \ \

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Thus, the linear inequality is $\"\"$ . \ \

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\ \

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The system of linear inequalities is $\"\"$ \ \

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\ \

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The system of linear inequalities is $\"\"$