Let f ( x ) = x 2 − 2 x f ( x ) = x 2 - 2 x . Round all answers to 2 decimal places. a . a . Find the slope of the secant line joining ( 2 , f ( 2 ) ( 2 , f ( 2 ) and ( 8 , f ( 8 ) ) ( 8 , f ( 8 ) ) .

The slope of the secant line joining (2, 0) and (8, 48) is 8.

Step-by-step explanation:

Let , from Analytical Geometry we remember that slope of a secant line is defined by:

(Eq. 1)

Where:

, - Initial and final independent variables, dimensionless.

, - Initial and final dependent variables, dimensionless.

Now we proceed to find the values of each dependent variable:

And slope of the secant slope is determined after replacing every variable:

The slope of the secant line joining (2, 0) and (8, 48) is 8.

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