A strong linear relationship exists between two variables (r = 0.97). The equation of the least squares line(regression equation) is y = 15.75 - 0.55x. For what values of x should we use this equation to make predictions? Below are the ordered pairs used to calculate the regression equation.
(5, 5.5), (7, 8), (8, 8), (10, 9), (11, 10), (12, 11)
A) Values of x less than or equal to 5
B) Any positive value of x
C) Values of x less than or equal to 12
D) Values of x between 5 and 12 inclusive