Answer:
The unit rate is 3 $/ft
Step-by-step explanation:
Let
x ----> the number of feet
y ----> represent the cost of a piece of pipe
we have
y=3x
Remember that
A connection between two factors, x, and y, speak to a relative variety on the off chance that it tends to be communicated in the structure y/x=k or y=kx
In a corresponding relationship the steady of proportionality k is equivalent to the incline m of the line and the line goes through the source
In this problem we have a proportional relationship
The unit rate is a similar that the slant of the straight capacity or the steady of proportionality k
so
m=k=3 $/ft
therefore
The unit rate is 3 $/ft
