Question

To bill customers for water usage, one city converts the number of gallons used into units. This relationship is represented by the equation g = 748u, where g is the total number of gallons of water used and u is the number of units.

Determine which statements about the relationship are true. Choose two options.

g is the dependent variable.
u is the dependent variable.
g is the independent variable.
u is the independent variable.
The two variables cannot be labeled as independent or dependent without a table of values.

Answer 1

THE ANSWERS ARE 2 AND 3

u is the dependent variable.

g is the independent variable.

Explanation:

CORRECT ON EDGE 2021

Answer 2

u is the dependent variable.

g is the independent variable.

Explanation:

In the given equation

g = 748u

where g is the total number of gallons of water used and u is the number of units. Recall that the city converts the number of gallons used into units

In the relationship, the number of gallons used can be determined by measurement. This is not dependent on any factor as such g is an independent variable. u may then be derived using the equation given by substituting the measured value of g into the equation as such u is dependent on the value of g as the other element in the equation is a constant.