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(a).

Graph:

Plot the points in cartesian plane .

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(b).

Observe the table and consider the two points $\"\"$ , $\"\"$ .

Consider $\"\"$ and $\"\"$ .

The line euation passing through the two points is $\"\"$

Substitute $\"\"$ and $\"\"$ . in the avobe equation

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The line equation is $\"\"$ .

(c).

Graph:

Graph the function for $\"\"$ .

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(d).