$\"\"$

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The statement is $\"\"$ .

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Consider $\"\"$ relationship.

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$\"\"$

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If $\"\"$

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$\"\"$ .

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It clearly means $\"\"$ is varying by $\"\"$ .

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Graph the function:

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$\"\"$

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Observe the graph:

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When $\"\"$ then $\"\"$ values are $\"\"$ .

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Interval is $\"\"$ .

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$\"\"$

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$\"\"$ .

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When $\"\"$ changes by $\"\"$ then $\"\"$ changes by $\"\"$ .

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$\"\"$

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$\"\"$

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Interval is $\"\"$ .

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$\"\"$ .

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.