Find the equation of the regression line and predict y when x = 2.5.

Question

x - 1 5 4 2 3 6
y - 25 5 10 20 15 5

Answer 1

http://www.alcula.com/calculators/statistics/linear-regression/

Answer 2

using that regression line calculator
y = -4.29x + 28.3

(2.5, 17.6)