a line of best fit is f(x)=-0.86x + 13.5 for the set of points in the table. using the equation for the line…

a line of best fit is f(x)=-0.86x + 13.5 for the set of points in the table. using the equation for the line of best fit, what is a good approximation for the value of the function, f(x), when x = 18?\n\n|x|f(x)|\n|----|----|\n|2|12|\n|3|10|\n|5|10|\n|6|8|\n|7|9|\n|8|5|\n|9|6|\n\n-5\n-2\n3\n12

a line of best fit is f(x)=-0.86x + 13.5 for the set of points in the table. using the equation for the line of best fit, what is a good approximation for the value of the function, f(x), when x = 18?\n\n|x|f(x)|\n|----|----|\n|2|12|\n|3|10|\n|5|10|\n|6|8|\n|7|9|\n|8|5|\n|9|6|\n\n-5\n-2\n3\n12

Answer

Explanation:

Step1: Substitute x value

Substitute (x = 18) into (f(x)=- 0.86x + 13.5). [f(18)=-0.86\times18 + 13.5]

Step2: Calculate multiplication

First, calculate (-0.86\times18=-15.48). [f(18)=-15.48 + 13.5]

Step3: Calculate addition

Then, calculate (-15.48+13.5=-1.98\approx - 2).

Answer:

-2