PLEASE ANSWER QUESTIONS LISTED AS ( 1 - 3 ) WILL GIVE BRAINLIST!!

1.) what kind of slope is 3/1?

A) undefined
B) zero
C) negative
D) positive

2.) what kind of slope is -4/5?

A) undefined
B) zero
C) negative
D) positive

3.) what kind of slope is -3/-1?

A) undefined
B) zero
C) negative
D) positive