Answer:
c, b, a
Step-by-step explanation:
1. DNE stands for does not exist and is there because of dividing by zero, and when you are dividing by zero like the slope is 4/0 or something the line is vertical.
2. when the slope is 0 it is not sloping at all so it is horizontal.
3. the slope is 9 so it will be a steep uphill slope.
