7. Use the data in each table to write a linear function using function notation

According to the tables, the linear functions are given by:

A linear function is modeled by:

In which:

Item 7:

From x = -3 to x = 1, when x changes by 4, y changes by 0.8, hence the slope is:

.

Then:

When x = 1, y = 0.2, which is used to find b. Hence:

Hence, .

Item 8:

From x = -5 to x = -2, when x changes by 3, y changes by 9, hence the slope is:

.

Then:

When x = 4, y = 17, which is used to find b. Hence:

Hence, .

Item 9:

From x = -5 to x = -2, when x changes by 3, y changes by -6, hence the slope is:

.

Then:

When x = 8, y = -18, which is used to find b. Hence:

Hence, .

You can learn more about linear functions at link

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step-by-step explanation:

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step-by-step explanation: