$\"\"$

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(a)

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The function is $\"\"$ . \ \

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Draw a coordinate plane.

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Graph the function $\"\"$ .

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Graph :

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$\"graph$

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Observe the graph of the function :

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The x - intercept is $\"\"$ .

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$\"\"$

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(b)

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The function is $\"\"$ .

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Substitute $\"\"$ in above function.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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The value of $\"\"$ .

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Both results of (a) and (b) are same.

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$\"\"$

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(a) The x - intercept is $\"\"$ .

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(b) The value of $\"\"$ .