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…

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\no - 5\no - 2\no 3\no 12

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\no - 5\no - 2\no 3\no 12

Answer

Explanation:

Step1: Substitute x=18 into equation

$f(18) \approx -0.86(18) + 13.5$

Step2: Calculate -0.86×18

$-0.86 \times 18 = -15.48$

Step3: Add 13.5 to result

$-15.48 + 13.5 = -1.98 \approx -2$

Answer:

B. -2