Question

o 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. Check all that apply. g is the dependent variable. u is the dependent variable. g is the independent variable. u is the independent variable. The variables cannot be labeled without a table of values. The variables cannot be labeled since any value can be selected for either.

Answer 1

The correct answers are:

g is the dependent variable; and u is the independent variable.

Explanation:

The equation is written as g = 748u.  This means that as the value of u changes, the value of g changes; this makes g depend on u, so g is dependent.

Since u is the variable that causes g to change, u is the independent variable.