C
Y=X+9
9 is called y intercept that's where pt starts
The number is front of X is called slope if no number it's 1 so it's 1/1 one up and one right up positive right positive start from 9
Answer:

Step-by-step explanation:

Answer:
20 icnhes
Step-by-step explanation:
not rlly
-(3*8)+6=-18
the water level decreased by 18 inches.