Question

1. Hector knows there is a relationship between the number of cars he washes and the time it takes

him to wash those cars. Identify the independent quantity and the dependent quantity in the
problem situation.

Answer 1

The independent variable is the time (variable x)

The dependent variable is the number of cars he washes (variable y)

Explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form
`y/x=k` or
`y=kx`

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
`y=kx`

The independent variable is the time x

The dependent variable is the number of cars he washes y