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Domain and range of each function :

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(a).

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In the graph $\"\"$ -axis indicates all temperatures from $\"\"$ C to $\"\"$ C.

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$\"\"$ -axis indicates the impact energy(J).

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Observe the arrow of Copper function.

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It is a constant function.

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Domain of the function in interval notation $\"\"$ .

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The range in interval notation $\"\"$ .

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Observe the arrow of Aluminum function.

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Domain of the function in interval notation $\"\"$ .

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The range in interval notation $\"\"$ .

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Observe the arrow of Zinc function.

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Domain of the function in interval notation $\"\"$ .

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The range in interval notation $\"\"$ .

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Observe the arrow of Steel function.

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Domain of the function in interval notation $\"\"$ .

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The range in interval notation $\"\"$ .

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(b).

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Impact energy of each metal at $\"\"$ C:

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Observe the graph:

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The impact energy of Copper metal at $\"\"$ C is $\"\"$ J.

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The impact energy of Aluminum metal at $\"\"$ C is $\"\"$ J.

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The impact energy of Zinc metal at $\"\"$ C is $\"\"$ J.

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The impact energy of Steel metal at $\"\"$ C is $\"\"$ J.

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(a). Domain of the four functions is $\"\"$ .

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Range: Copper $\"\"$ , Aluminium $\"\"$ , Zinc $\"\"$ and Steel $\"\"$ .

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(b). Impact energy of each metal at $\"\"$ C.

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Copper $\"\"$ J, Aluminium $\"\"$ J, Zinc $\"\"$ J and Steel $\"\"$ J.