help please i give brainlist crown to whoever answers all correctly

Answer:
a)0
b) 3/4
c)undefined
d)5/3
Step-by-step explanation:
Slope:
y2-x2/y1-x1
so,
line b.
two points: 0,0 and -4,3
3-0/0--4
3/4
line d. points:
0,-1 and 3,3
3--1/3-0
5/3
a is 0 because left to right
c is undefined because up to down.
Hope this helps ;D