Answer:
a. or 
Step-by-step explanation:
Slope is equal to y1-y2 over x1-x2.
So the equation would be:

2-(-1)=2+1=3
-3-(-1)=-3+1=-2
So the answer is:

Answer:
The answer is 1 
The work is shown on the picture.
Step-by-step explanation: Hope this helps and mark brainliest if ya want :)!
-11 y 17 with z and x on the line