Answer:
The independent variable is the time (variable x)
The dependent variable is the number of cars he washes (variable y)
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form [tex]y/x=k[/tex] or [tex]y=kx[/tex]
In this problem
The relationship between the number of cars he washes and the time it takes him to wash those cars represent a a proportional variation
Let
y -----> the number of cars he washes
x -----> the time
The linear equation is [tex]y=kx[/tex]
The independent variable is the time x
The dependent variable is the number of cars he washes y
