We have been given that professional plumbers suggest that a sewer pipe should be sloped 0.25 inch for every foot.
Therefore, we can find the slope as:


Therefore, the recommended slope for a sewer pipe is 
Step-by-step explanation:
(-1,0),m=2
(1-7),m=12
m=-4,(-1,-4)
5 multiplied by .3 is 1.5
1.5 + 18.5 = 20.
y = 9.25
Translation rotation reflection
A distance-time graph tells us how far an object has moved with time. The steeper the graph, the faster the motion. A horizontal line means the object is not changing its position - it is not moving, it is at rest. A downward sloping line means the object is returning to the start.