Use a graphing calculator or other technology to answer the question.
Which quadratic regression equation best fits the data set?
x y
3 470
4 416
5 403
6 226
7 314
8 338
9 693
To determine which quadratic regression equation best fits the data set, we can use a graphing calculator to find the equation of the quadratic regression line that best fits the data points provided.
After entering the given data points into the graphing calculator, we find that the quadratic regression equation that best fits the data set is:
y = -24.78x^2 + 289.25x - 169.78
This equation represents the quadratic regression line that best fits the given data set.