a. -5/2 is located on the left of 0 and β1 is located on the right of 0
* b. 5/2 is located on the right of 0 and β1 is located on the left of 0
c. 5/2 is located on the left of β1
* d. 5/2 is located on the right of β1
Right answers are marked with a star (*).