$\"\"$ $\"\"$ $\"\"$

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The original function is $\"\"$

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Write $\"\"$ as $\"\"$ or $\"\"$ $\"\"$

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First solve the case $\"\"$ .

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Apply subtraction property of equality: if a = b, then a - c = b - c.

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$\"\"$ (Subtract 6 from each side)

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$\"\"$ (Additive inerse property: $\"\"$ )

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$\"\"$ (Additive identity property: $\"\"$ )

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$\"\"$ (Subtract: $\"\"$ )

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$\"\"$

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$\"\"$ (Divide each side by 4)

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$\"\"$ (Cancel common terms)

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$\"\"$ (Divide: $\"\"$ )

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$\"\"$ (Multiply each side by negative one)

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$\"\"$ (Product of two same signs is positive) \ \

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$\"\"$

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Next solve the case $\"\"$ .

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$\"\"$ (Subtract 6 from each side)

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$\"\"$ (Additive inerse property: $\"\"$ )

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$\"\"$ (Additive identity property: $\"\"$ )

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$\"\"$ (Subtract: $\"\"$ )

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$\"\"$

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$\"\"$ (Divide each side by 4)

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$\"\"$ (Cancel common terms)

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$\"\"$ (Divide: $\"\"$ )

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$\"\"$ (Multiply each side by negative one)

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$\"\"$ (Product of two same signs is positive) $\"\"$

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First, draw a number line.

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To graph the solutions set, mark the numbers -1.5 and 4.5 on number line.

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$\"\"$ $\"\"$

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The solution set is $\"\"$ .