$\"\"$

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The percentage of the population of Argentina lived in rural areas are tabulated from $\"\"$ to $\"\"$ .

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Graph :

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Sketch the scattered plots by using the EX-SHEET method.

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$\"\"$

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Observe the scatter plots in a graph,

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The plotted dots are appeared as decreasing in a linear way.

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So the function of the graph represents a linear function.

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From the EX-SHEET method the linear function is $\"\"$ .

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$\"\"$

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The linear function is $\"\"$ .

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Find the percentage of the rural population in $\"\"$ .

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Substitute $\"\"$ in the linear function.

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$\"\"$

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In the year $\"\"$ , the percentage of the rural population is $\"\"$ .

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Find the percentage of the rural population in $\"\"$ .

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Substitute $\"\"$ in the linear function.

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$\"\"$

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In the year $\"\"$ , the percentage of the rural population is $\"\"$ .

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$\"\"$

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Linear model is appropriate for the data.

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The percentage of the rural population in $\"\"$ and $\"\"$ is $\"\"$ and $\"\"$ .