Which of the following situations is inconsistent?
a. = 499 + .21 X and r = .75
b. = 100 + .9X and r = -.70
c. = 20 + 1 X and r = .40
d. = -7 - 4X and r = -.90
1. Situation a
2. Situation b
3. Situation c
4. Situation d
5. Situation b & d "
The = sign before the numbers is how it is presented to me in the assignment. I'm not sure if they are a mistake or not.