A the predicted value of y increases by 4 units for each 1un
A.
the predicted value of y increases by 4 units for each 1-unit increase of x1, holding x2 constant.
B.
the predicted value of y increases by 4 units for each 1-unit increase of x1, without regard to x2.
C.
the relationship between x1 and y is significant.
D.
the predicted value of y is 4 when x1 = 0.
E.
| A. | the predicted value of y increases by 4 units for each 1-unit increase of x1, holding x2 constant. | 
| B. | the predicted value of y increases by 4 units for each 1-unit increase of x1, without regard to x2. | 
| C. | the relationship between x1 and y is significant. | 
| D. | the predicted value of y is 4 when x1 = 0. | 
| E. | the predicted value of y increases by 4 units for each  1-unit increase of x1 when  | 
Solution
(A) is the only correct interpretation , and rest 4 are false.

