Answer:
the line of best fit can be approximated to:
y = -1.560 x + 22.105
Explanation:
You are most likely expected to use a graphing tool are statistical program to calculate this. So enter the list of x-values separate from the list of y values and run the tool in linear regression mode.
Look at the attached image with the actual results including the line of best fit.
The equation can be written (rounding slope and y-intercept to 3 decimals) as:
y = -1.560 x + 22.105