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8.)

Add 42 to both sides of the equal sign to isolate the variable (n).

9.)

Subtract 62 from both sides of the equal sign to isolate the variable (b).

10.)

Subtract 25 from both sides of the equal sign to isolate the variable (l).

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.