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

a line of best fit is f(x) = -0.86x + 13.5 for the set of points in the table.\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 |\nusing 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-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.\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 |\nusing 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-5\n-2\n3\n12

Answer

Answer:

-2

Explanation:

Step1: Substitute x value

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

Step2: Calculate product

Calculate (-0.86\times18=-15.48). [f(18)=-15.48+13.5]

Step3: Calculate sum

Calculate (-15.48 + 13.5=-1.98\approx - 2).