Answer: Proportional
Step-by-step explanation:
Given : A flat rate charged by the carpet installer = $40
On addition to that , he charges $1.50 per square foot for labor.
Then , Total cost of carpet= Fixed rate of $40 + $1.50 per square foot for labor.
Let x be the area of the carpet in square feet.
Then, the total cost ( in $)= 40 +1.50x , which is a linear function with slope 1.50.
According to the definition of linear function , we have
A linear function is in the form of [tex]y=mx+c[/tex] , it shows that the relationship between x and y is proportional.
That means , The relationship between the total cost for labor and the amount of carpet installed is proportional.
